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Sample records for ad contact boeing

  1. 77 FR 16188 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-20

    ...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737... includes installing new hardware, replacing the bolt with a new bolt, and contacting The Boeing Company for... following new airworthiness directive (AD): The Boeing Company: Docket No. FAA-2012-0268;...

  2. 77 FR 3187 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-23

    ...-3189] [FR Doc No: 2012-1202] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part... certain Model 767-200 and -300 series airplanes. This proposed AD was prompted by reports of fatigue... identified in this proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management,...

  3. 78 FR 72836 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-04

    ... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, 3855 Lakewood...; Internet https://www.myboeingfleet.com . You may view this referenced service information at the FAA... the Internet at http://www.regulations.gov ; or in person at the Docket Management Facility between...

  4. 77 FR 2442 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-18

    ... January 12, 2010 (74 FR 68515, December 28, 2009). The Director of the Federal Register previously..., 2009 (74 FR 38905, August 5, 2009). For service information identified in this AD contact Boeing... supplemental NPRM published in the Federal Register on April 5, 2011 (76 FR 18664). That supplemental...

  5. 75 FR 50854 - Airworthiness Directives; The Boeing Company Model 767-300 Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-18

    ..., consequently, a possible ignition source in the center auxiliary fuel tank. DATES: This AD is effective... identified in this AD, contact Boeing Commercial ] Airplanes, Attention: Data & Services Management, P.O. Box... Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086, May 7,...

  6. 76 FR 42607 - Airworthiness Directives; The Boeing Company Model 767-200, -300, and -400ER Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-19

    ... slides, and additional reports of missing snap rings. We are issuing this AD to prevent failure of an.... We are proposing this AD to prevent failure of an entry or service door to open fully in the event of... identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O....

  7. 76 FR 78138 - Airworthiness Directives; The Boeing Company Model 777-200, -200LR, -300, and -300ER Series...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-16

    ... structure, and cap sealing certain penetrating fasteners of the main and center fuel tanks. This AD expands... (75 FR 78588, December 16, 2010). We must receive any comments on this AD by January 30, 2012... identified in this AD, contact Boeing Commercial Airplanes, Attention: Data & Services ] Management, P.O....

  8. 77 FR 71723 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-04

    ...-13 R1, Amendment 39-12317 (66 FR 36146, July 11, 2001), for certain The Boeing Company Model 737-200... ] (66 FR 36146, July 11, 2001), and adding the following new AD: The Boeing Company: Docket No. FAA-2012... Directives; The Boeing Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION:...

  9. 78 FR 60679 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-02

    ...-273-AD; Amendment 39-17604; AD 2013-19-22] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for all The Boeing Company Model 717-200 airplanes. This AD was... result in damage to the adjacent structure and consequent loss of structural integrity of the...

  10. 78 FR 52419 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-23

    ...-128-AD; Amendment 39-17555; AD 2013-16-17] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for all The Boeing Company Model 727, 727C, 727-100, 727-100C, 727... any cracked structure. We are issuing this AD to detect and correct fatigue cracking of the...

  11. 78 FR 25898 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-03

    ...; 55 FR 46652, November 6, 1990), and adding the following new AD: The Boeing Company: Docket No. FAA...-6801 (55 FR 46652, November 6, 1990). (c) Applicability This AD applies to The Boeing Company Model 747...-23-14, Amendment 39-6801 (Docket No. 90-NM-110-AD; 55 FR 46652, November 6, 1990), for certain...

  12. 75 FR 18446 - Airworthiness Directives; The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-12

    ... installation, air distribution system Humidifier duct installation Heat exchanger installation, air... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC... CONTACT: Sue McCormick, Aerospace Engineer, Cabin Safety and Environmental Systems Branch, ANM-150S,...

  13. 75 FR 78588 - Airworthiness Directives; The Boeing Company Model 777-200, -300, and -300ER Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-16

    ... fasteners of the main and center fuel tanks. This AD results from fuel system reviews conducted by the..., contact Boeing Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65... supplemental NPRM was published in the Federal Register on June 18, 2010 (75 FR 34663). The original NPRM...

  14. 75 FR 34663 - Airworthiness Directives; The Boeing Company Model 777-200, -300, and -300ER Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-18

    ... fasteners of the main and center fuel tanks. The original NPRM resulted from fuel system reviews conducted... proposed AD, contact Boeing Commercial Airplanes, Attention: Data & Services Management, P. O. Box 3707, MC... series airplanes. That original NPRM was published in the Federal Register on January 29, 2007 (72...

  15. 78 FR 57049 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-17

    ...-025-AD; Amendment 39-17575; AD 2013-18-02] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 767-200, -300, -300F, and -400ER... and corrective actions if necessary, and if necessary, a detailed inspection to determine the nut...

  16. 77 FR 37770 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-25

    ...-178-AD; Amendment 39-17094; AD 2012-12-14] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 767-200 and -300 series..., corrosion damage, and any other irregularity of the lower main sill inner chord and surrounding...

  17. 77 FR 69744 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-21

    ... NPRM (76 FR 69685, November 9, 2011) to clarify that structural inspections of fuselage structure are...-239-AD; Amendment 39-17255; AD 2012-22-17] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... new airworthiness directive (AD) for certain The Boeing Company Model 767-200 and -300...

  18. 77 FR 37793 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-25

    ...-124-AD; Amendment 39-17099; AD 2012-12-19] RIN 2120-AA64 Airworthiness Directives; the Boeing Company... new airworthiness directive (AD) for certain the Boeing Company Model 777-200, -200LR, and -300ER... ceiling support structure of Section 41, in airplanes incorporating the overhead space utilization...

  19. 77 FR 5996 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-07

    ... new airworthiness directive (AD) for certain The Boeing Company Model 737-100, -200, -200C, and -300...-101-AD; Amendment 39-16932; AD 2012-02-09] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... start a small fire and lead to a larger fire that may spread throughout the airplane through the...

  20. 78 FR 4051 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-18

    ...-16059 (74 FR 55763, October 29, 2009). (c) Applicability This AD applies to The Boeing Company Model 747... Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are superseding an existing airworthiness directive (AD) for certain The Boeing Company Model 747-100,...

  1. 78 FR 22802 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-17

    ... searching for Docket No. FAA-2013-0331. Other Relevant Rulemaking AD 2000-01-05, Amendment 39-11502 (65 FR... terminating modification. AD 2000-02-22, Amendment 39-11540 (65 FR 5222, February 3, 2000), for certain Boeing... 94-17-03, Amendment 39-8998 (59 FR 41647, August 15, 1994), for certain Boeing Model 767...

  2. 75 FR 39185 - Airworthiness Directives; The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-08

    ... holidays. For service information identified in this proposed AD, contact Boeing Commercial Airplanes... on the Internet at http://www.regulations.gov ; or in person at the Docket Management Facility... for the Docket Office (telephone 800-647-5527) is in the ADDRESSES section. Comments will be...

  3. 78 FR 11972 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-21

    ...-02, Amendment 39-6489 (55 FR 8372, March 7, 1990). AD 90-06-02 mandated the skin replacement within... ADs AD 90-06-02, Amendment 39-6489 (55 FR 8372, March 7, 1990), affects this AD. (c) Applicability...-077-AD; Amendment 39-17362; AD 2013-04-05] RIN 2120-AA64 Airworthiness Directives; The Boeing...

  4. 78 FR 21276 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-10

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 767... necessary, a detailed inspection to determine the nut type installed in the outboard flap support rib...

  5. 78 FR 47233 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-05

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737-600, -700, -800, -900, and -900ER airplanes modified by particular supplemental type certificates...

  6. 77 FR 27142 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-09

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all The Boeing Company Model 717-200... structure and consequent loss of structural integrity of the airplane. DATES: We must receive comments...

  7. 77 FR 40828 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-11

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; The Boeing Company...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model DC-10... structure, which could adversely affect the airplane's continued safe flight and landing. DATES: We...

  8. Boeing P-26A

    NASA Technical Reports Server (NTRS)

    1937-01-01

    Boeing P-26A: Popularly called the 'Peashooter,' the Boeing P-26A was the Boeing model 266. Powered by the Pratt & Whitney Wasp radial engine, the P-26 was the Army's front-line fighter during the mid-1930's. The P-26 held the distinction of being the Army's first monoplane fighter. This example had a reference line painted on its side by the NACA shortly after its arrival at Langley Field.

  9. Loftin Collection - Boeing Aircraft

    NASA Technical Reports Server (NTRS)

    1933-01-01

    Either a F2B-1 or F3B-1, both aircraft were built by Boeing and both were powered by Pratt and Whitney Wasp engines. These fighters were intended for Navy shipboard use. Boeing F3B-1: While most Boeing F3B-1s served the U. S. Navy aircraft carriers the Lexington and the Saratoga, this example flew in NACA hands at the Langley Memorial Aeronautical Laboratory in the late 1920's. Also known as the Boeing Model 77, the aircraft was the next to last F3B-1 build in November 1928.

  10. Boeing YP-29A

    NASA Technical Reports Server (NTRS)

    1938-01-01

    Boeing YP-29A: The YP-29A originally was an enclosed cockpit fighter with a NACA cowling around the Pratt and Whitney Wasp power plant, but was modified to this configuration with a Townend ring around the Wasp and an open cockpit. The redesigned headrest which extended to the tail surfaces was reminiscent of, and substantially larger than that on the Boeing

  11. 75 FR 61999 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-07

    ..., amendment 39-12330 (66 FR 38350, July 24, 2001), for certain Boeing Model 767 airplanes. That AD requires... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... amendment 39-12330 (66 FR 38350, July 24, 2001) and adding the following new AD: The Boeing Company:...

  12. 77 FR 42964 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-23

    ... this AD (paragraph (l) of the NPRM (76 FR 19710, April 8, 2011), and also paragraphs (h), (l), (m), and (n) of this AD (paragraphs (h), (m), (n), and (o) of the NPRM, respectively) to reference Boeing TR... paragraph (h) of this AD (the restated actions of AD 2008-10-11, Amendment 39-15517 (73 FR 25974, May...

  13. 78 FR 49229 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-13

    ... proposed AD. Discussion On November 12, 2009, we issued AD 2009-24-07, Amendment 39-16095 (74 FR 62231...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect... (74 FR 62231, November 27, 2009), and adding the following new AD: The Boeing Company: Docket No....

  14. 78 FR 16198 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-14

    ... proposed AD. Discussion On December 16, 2009, we issued AD 2009-26-16, Amendment 39-16155 (74 FR 69249... Since AD 2009-26-16, Amendment 39-16155 (74 FR 69249, December 31, 2009), Was Issued AD 2009-26-16, Amendment 39-16155 (74 FR 69249, December 31, 2009) refers to Boeing Service Bulletin MD11-28-126,...

  15. CCiCap: Boeing

    NASA Video Gallery

    NASA announced today its plans to partner with The Boeing Company for the next phase of the agency's Commercial Crew Program (CCP). Called Commercial Crew integrated Capability (CCiCap), the initia...

  16. Antifungal activity by vapor contact of essential oils added to amaranth, chitosan, or starch edible films.

    PubMed

    Avila-Sosa, Raúl; Palou, Enrique; Jiménez Munguía, María Teresa; Nevárez-Moorillón, Guadalupe Virginia; Navarro Cruz, Addí Rhode; López-Malo, Aurelio

    2012-02-01

    Antimicrobial agents can be incorporated into edible films to provide microbiological stability, since films can be used as carriers of a variety of additives to extend product shelf life and reduce the risk of microbial growth on food surfaces. Addition of antimicrobial agents to edible films offers advantages such as the use of small antimicrobial concentrations and low diffusion rates. The aim of this study was to evaluate inhibition by vapor contact of Aspergillus niger and Penicillium digitatum by selected concentrations of Mexican oregano (Lippia berlandieri Schauer), cinnamon (Cinnamomum verum) or lemongrass (Cymbopogon citratus) essential oils (EOs) added to amaranth, chitosan, or starch edible films. Essential oils were characterized by gas chromatography-mass spectrometry (GC/MS) analysis. Amaranth, chitosan and starch edible films were formulated with essential oil concentrations of 0.00, 0.25, 0.50, 0.75, 1.00, 2.00, or 4.00%. Antifungal activity was evaluated by determining the mold radial growth on agar media inoculated with A. niger and P. digitatum after exposure to vapors arising from essential oils added to amaranth, chitosan or starch films using the inverted lid technique. The modified Gompertz model adequately described mold growth curves (mean coefficient of determination 0.991 ± 0.05). Chitosan films exhibited better antifungal effectiveness (inhibition of A. niger with 0.25% of Mexican oregano and cinnamon EO; inhibition of P. digitatum with 0.50% EOs) than amaranth films (2.00 and 4.00% of cinnamon and Mexican oregano EO were needed to inhibit the studied molds, respectively). For chitosan and amaranth films a significant increase (p<0.05) of lag phase was observed among film concentrations while a significant decrease (p<0.05) of maximum specific growth was determined. Chitosan edible films incorporating Mexican oregano or cinnamon essential oil could improve the quality of foods by the action of the volatile compounds on surface growth

  17. Antifungal activity by vapor contact of essential oils added to amaranth, chitosan, or starch edible films.

    PubMed

    Avila-Sosa, Raúl; Palou, Enrique; Jiménez Munguía, María Teresa; Nevárez-Moorillón, Guadalupe Virginia; Navarro Cruz, Addí Rhode; López-Malo, Aurelio

    2012-02-01

    Antimicrobial agents can be incorporated into edible films to provide microbiological stability, since films can be used as carriers of a variety of additives to extend product shelf life and reduce the risk of microbial growth on food surfaces. Addition of antimicrobial agents to edible films offers advantages such as the use of small antimicrobial concentrations and low diffusion rates. The aim of this study was to evaluate inhibition by vapor contact of Aspergillus niger and Penicillium digitatum by selected concentrations of Mexican oregano (Lippia berlandieri Schauer), cinnamon (Cinnamomum verum) or lemongrass (Cymbopogon citratus) essential oils (EOs) added to amaranth, chitosan, or starch edible films. Essential oils were characterized by gas chromatography-mass spectrometry (GC/MS) analysis. Amaranth, chitosan and starch edible films were formulated with essential oil concentrations of 0.00, 0.25, 0.50, 0.75, 1.00, 2.00, or 4.00%. Antifungal activity was evaluated by determining the mold radial growth on agar media inoculated with A. niger and P. digitatum after exposure to vapors arising from essential oils added to amaranth, chitosan or starch films using the inverted lid technique. The modified Gompertz model adequately described mold growth curves (mean coefficient of determination 0.991 ± 0.05). Chitosan films exhibited better antifungal effectiveness (inhibition of A. niger with 0.25% of Mexican oregano and cinnamon EO; inhibition of P. digitatum with 0.50% EOs) than amaranth films (2.00 and 4.00% of cinnamon and Mexican oregano EO were needed to inhibit the studied molds, respectively). For chitosan and amaranth films a significant increase (p<0.05) of lag phase was observed among film concentrations while a significant decrease (p<0.05) of maximum specific growth was determined. Chitosan edible films incorporating Mexican oregano or cinnamon essential oil could improve the quality of foods by the action of the volatile compounds on surface growth

  18. 78 FR 1772 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-09

    ... the credit for previous actions specified by paragraph (t) of AD 2012-18-13, Amendment 39-17190 (77 FR... actions specified in the existing AD. We are proposing this AD to detect and correct fatigue cracking... (77 FR 57990, September 19, 2012), for all The Boeing Company Model 737- 100, -200, -200C, -300,...

  19. 77 FR 70362 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-26

    ..., Amendment 39-16157 (75 FR 1533, January 12, 2010)), AD 2010-01-01 requires accomplishing the main entry door... new airworthiness directive (AD) for all The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747.... This AD was prompted by reports of cracks in the main entry door number 1 upper main sill outer...

  20. 77 FR 60285 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-03

    ... airworthiness directive (AD) for certain of The Boeing Company Model 777 airplanes. This AD was prompted by heat... issuing this AD to detect and correct cracking in the MLG center axle and shock strut inner cylinder lugs... Register on May 1, 2012 (77 FR 25647). That NPRM proposed to require repetitive lubrication of the...

  1. Boeing F3B-1

    NASA Technical Reports Server (NTRS)

    1930-01-01

    Boeing F3B-1: While most Boeing F3B-1s served aboard the U. S. Navy aircraft carriers Lexington and Saratoga, this example flew in NACA hands at the Langley Memorial Aeronautical Laboratory in the late 1920's. Also known as the Boeing Model 77, the aircraft was powered by a Pratt & Whitney Wasp radial engine.

  2. 77 FR 15638 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-16

    ... Friday, except Federal holidays. The AD docket contains this proposed AD (74 FR 15683, April 7, 2009... NPRM published in the Federal Register on April 7, 2009 (74 FR 15683). That NPRM proposed to require... issued the previous NPRM (74 FR 15683, April 7, 2009), Boeing issued Special Attention Service...

  3. 77 FR 34879 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-12

    ... proposed AD. Discussion On April 8, 2008, we issued AD 2008-08-24, Amendment 39-15478 (73 FR 21242, April..., Amendment 39-15478 (73 FR 21242, April 21, 2008), refers to Boeing Special Attention Service Bulletin 737-54...-08-24, Amendment 39-15478 (73 FR 21242, April 21, 2008), an airplane on which the actions...

  4. 78 FR 26720 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-08

    ...-18-07, Amendment 39-15664 (73 FR 56960, October 1, 2008), for certain The Boeing Company Model 747... during an emergency evacuation. Actions Since Existing AD (73 FR 56960, October 1, 2008) Was Issued Since we issued AD 2008-18-07, Amendment 39-15664 (73 FR 56960, October 1, 2008), an operator reported...

  5. 77 FR 42625 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-20

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2011-1412; Directorate Identifier 2011-NM-158-AD; Amendment 39-17088; AD 2012-12-08] RIN 2120-AA64 Airworthiness Directives; The Boeing...

  6. 77 FR 39153 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-02

    ... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation... (76 FR 9498, February 18, 2011). (c) Applicability This AD applies to all The Boeing Company Model 737... by paragraphs (h) and (i) of AD 2011-04-10, Amendment 39-16609 (76 FR 9498, February 18,...

  7. 78 FR 25369 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-01

    ...-269-AD; Amendment 39-17433; AD 2013-08-16] RIN 2120-AA64 Airworthiness Directives; The Boeing Company... Register on September 18, 2012 (77 FR 57536). That NPRM proposed to require repetitive inspections for... comments received on the proposal (77 FR 57536, September 18, 2012) and the FAA's response to each...

  8. 78 FR 24673 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-26

    ... issued AD 2013-02-51, Amendment 39-17366 (78 FR 12231, February 22, 2013), for all The Boeing Company... 2013-02-51, Amendment 39-17366 (78 FR 12231, February 22, 2013), Was Issued Since we issued AD 2013-02-51, Amendment 39-17366 (78 FR 12231, February 22, 2013), the National Transportation Safety...

  9. 78 FR 58962 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-25

    ... ignition source (e.g., hot brakes or engine exhaust nozzle), consequently leading to a fuel-fed fire. DATES...-10, Amendment 39-6230 (54 FR 23643, June 2, 1989) (``AD 89-12-10''), for certain The Boeing Company... airplanes to the applicability, and clarify the applicability of AD 89-12-10, Amendment 39-6230 (54 FR...

  10. 77 FR 46343 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-03

    ... 2009-22-08, Amendment 39-16059 (74 FR 55763, October 29, 2009), for certain The Boeing Company Model... issued AD 2009-22-08, Amendment 39-16059 (74 FR 55763, October 29, 2009), we have determined that... would retain all requirements of AD 2009-22-08, Amendment 39-16059 (74 FR 55763, October 29, 2009)....

  11. 78 FR 43839 - Airworthiness Directives; the Boeing Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-22

    ... your comments. We specifically invite comments on the overall regulatory, economic, environmental, and... 14, 1994, we issued AD 94-13-06, Amendment 39-8946 (59 FR 32879, June 27, 1994), for certain Boeing... ties and the resultant rapid decompression of the airplane. Actions Since Existing AD (59 FR...

  12. 77 FR 10403 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-22

    ... Planning Data (MPD) Document For Model 767-200, -300, -300F, and -400ER series airplanes having line... Boeing Company Model 767 airplanes. The existing AD currently requires revising the Airworthiness Limitations Section of the maintenance planning data (MPD) document. Since we issued that AD, a...

  13. 77 FR 58791 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-24

    ...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 737... revision to the airworthiness limitations of the maintenance planning data document. This proposed AD would... procedures found in 14 CFR 11.43 and 11.45, by any of the following methods: Federal eRulemaking Portal:...

  14. 76 FR 68666 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-07

    ... following new airworthiness directive (AD): The Boeing Company: Docket No. FAA-2011-1171; Directorate... Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The...

  15. 78 FR 22439 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-16

    ...-04, Amendment 39-15526 (73 FR 29421, May 21, 2008), and adding the following new AD: The Boeing... cutouts of the forward entry and forward galley service doorways, and corrective actions if necessary... forward entry and galley service doorway upper and lower hinge cutouts, expand the inspection area at...

  16. 78 FR 75512 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-12

    ..., we issued AD 2010-24-11, Amendment 39-16530 (75 FR 74616, December 1, 2010) for certain The Boeing... actions if necessary. On February 20, 2013, we issued AD 2013-04-11, Amendment 39-17369 (78 FR 14644... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4)...

  17. 78 FR 15332 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-11

    ... (73 FR 15397, March 24, 2008), for all The Boeing Company Model 737-300, - 400, and -500 series... Existing AD (73 FR 15397, March 24, 2008) Was Issued The preamble to AD 2008-06-29, Amendment 39-15441 (73 FR 15397, March 24, 2008), specifies that we consider the requirements ``interim action'' and...

  18. 77 FR 2664 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-19

    ... Rulemaking We have issued similar rulemaking in AD 2011-01-11, Amendment 39- 16565 (76 FR 430, January 5... necessary. We have also issued NPRM 2011-NM-027-AD (76 FR 53346, August 26, 2011), for The Boeing Company... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3)...

  19. 78 FR 31867 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-28

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will..., Amendment 39-16352 (75 FR 38001, July 1, 2010). (c) Applicability This AD applies to The Boeing Company... time as of August 28, 2001 (the effective date of AD 2001-15-03, Amendment 39-12337 (66 FR 38365,...

  20. 75 FR 38950 - Airworthiness Directives; The Boeing Company Model 727 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-07

    ..., Amendment 39-16223 (75 FR 13225, March 19, 2010), applies to Boeing Model 737-100, -200, -200C, -300, -400, and, -500 series airplanes. AD 2007-19-07, Amendment 39-15198 (72 FR 60244, October 24, 2007), applies...-16096 (74 FR 62217, November 27, 2009) applies to certain Boeing Model 777-200, -200LR, -300,...

  1. 75 FR 42592 - Airworthiness Directives; The Boeing Company Model 767-200, -300, and -300F Series Airplanes...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-22

    ... 13, 2005, we issued AD 2005-19-23, amendment 39-14288 (70 FR 55519, September 22, 2005). That AD... (65 Certain Boeing Model 767-54A0094 Repetitive inspections FR 18883, April 10, 2000). 767 series...-16-12, amendment 39-13768 (69 Certain Boeing Model 767-54-0069, 767-54- Modification of the FR...

  2. 78 FR 60670 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-02

    ...We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 747-100, -100B, -100B SUD, -200B, -200C, - 200F, -300, -400, -400D, -400F, and 747SR series airplanes. This AD was prompted by reports of cracking at the aft upper corner of the main entry door (MED) 5 cutout. This AD requires inspecting for the presence of repairs and measuring the edge margin at certain......

  3. 77 FR 63266 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-16

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... turbulence. DATES: We must receive comments on this proposed AD by November 30, 2012. ADDRESSES: You may send... damage to equipment during in-flight turbulence. Relevant Service Information We reviewed Boeing...

  4. 78 FR 65185 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-31

    ...) of the engineering data that support the established structural maintenance program. This AD requires..., 2013 (78 FR 42720). The NPRM proposed to require for certain airplanes, a modification of the web of... received. Boeing supported the NPRM (78 FR 42720, July 17, 2013). Clarification of Applicability Since...

  5. 77 FR 37332 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-21

    ...-15404 (73 FR 11347, March 3, 2008), to include an AD applies to certain The Boeing Company Model 757-200... Federal Register on August 24, 2011 (76 FR 52901). That NPRM proposed to continue to repetitive... cracking of the critical fastener holes, and repair if necessary. Actions Since Previous NPRM (76 FR...

  6. 78 FR 72550 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-03

    ... engine exhaust nozzle), consequently leading to a fuel-fed fire. DATES: This AD is effective January 7... published in the Federal Register on August 13, 2013 (78 FR 49237). The NPRM proposed to require an... considered the comment received. The Boeing Company stated that it supports the NPRM (78 FR 49237, August...

  7. 78 FR 12991 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-26

    ...-17-05, Amendment 39-11879 (65 FR 51754, August 25, 2000), for certain The Boeing Company Model 767...-08, Amendment 39-15274 (72 FR 67236, November 28, 2007), was issued for Model 767 airplanes. That AD...-11879 (65 FR 51754, August 25, 2000). For Model 767-200, -300, and -300F series airplanes, line...

  8. 78 FR 70196 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-25

    ... new airworthiness directive (AD) for certain The Boeing Company Model 757-200 and -200PF series..., which could cause a fuel leak near an ignition source (e.g., hot brakes or engine exhaust nozzle... Register on August 14, 2013 (78 FR 49379). The NPRM proposed to require an inspection of the left-...

  9. 77 FR 47267 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-08

    ... as of November 28, 2007 (72 FR 65655, November 23, 2007). ADDRESSES: For service information... AD 2007-23-18, Amendment 39-15266 (72 FR 65655, November 23, 2007). The SNPRM published in the Federal Register on February 2, 2012 (77 FR 5195). The SNPRM applied to all Boeing Model 747-100B SUD,...

  10. 77 FR 26945 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-08

    ... NPRM published in the Federal Register on April 25, 2011 (76 FR 22828). That NPRM proposed to require... (76 FR 22828, April 25, 2011) applies to all airplanes identified in paragraph (h) of this AD and the... (76 FR 22828, April 25, 2011) and the FAA's response to each comment. Boeing supports the...

  11. 78 FR 46540 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-01

    ...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747... fasteners, which can lead to cracking and loss of load carrying capacity, resulting in a possible..., Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone...

  12. 77 FR 52201 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-29

    ... Register on December 12, 2011 (76 FR 77157). That NPRM proposed to require replacing bleed valve parts and... participate in developing this AD. The following presents the comments received on the proposal (76 FR 77157... American Airlines (American) and Boeing requested that the NPRM (76 FR 77157, December 12, 2011) allow...

  13. 77 FR 54793 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-06

    ... the Federal Register on November 14, 2011 (76 FR 70377). That NPRM proposed to require adding design... (76 FR 70377, November 14, 2011) and the FAA's response to each comment. Request To Revise Applicability Boeing requested that we revise the applicability of the NPRM (76 FR 70377, November 14, 2011)...

  14. 77 FR 65611 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-30

    ... specified products. That NPRM published in the Federal Register on August 1, 2012 (77 FR 45518). That NPRM... participate in developing this AD. We have considered the comment received. Boeing supports the NPRM (77 FR... proposed in the NPRM (77 FR 45518, August 1, 2012) for correcting the unsafe condition; and Do not add...

  15. 78 FR 39633 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-02

    ...-23-06, Amendment 39-6794 (55 FR 46499, November 5, 1990), for certain Boeing Model 757 series airplanes, which requires close visual inspections of the trailing edge wedges on the leading edge slats to... December 18, 1991, we issued AD 91-22-51, Amendment 39-8129 (57 FR 781, January 9, 1992), for...

  16. 76 FR 2848 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-18

    ... proposed AD. Discussion On January 18, 2007, we issued AD 2007-03-01, Amendment 39-14912 (72 FR 3939... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... Amendment 39-14912 (72 FR 3939, January 29, 2007) and adding the following new AD: The Boeing...

  17. Boeing flight deck design philosophy

    NASA Technical Reports Server (NTRS)

    Stoll, Harty

    1990-01-01

    Information relative to Boeing flight deck design philosophy is given in viewgraph form. Flight deck design rules, design considerations, functions allocated to the crew, redundancy and automation concerns, and examples of accident data that were reviewed are listed.

  18. A novel safety assessment strategy for non-intentionally added substances (NIAS) in carton food contact materials.

    PubMed

    Koster, Sander; Rennen, Monique; Leeman, Winfried; Houben, Geert; Muilwijk, Bas; van Acker, Frederique; Krul, Lisette

    2014-01-01

    One of the main challenges in food contact materials research is to prove that the presence of non-intentionally added substances (NIAS) is not a safety issue. Migration extracts may contain many unknown substances present at low concentrations. It is difficult and time-consuming to identify all these potential NIAS and concurrently to assess their health risk upon exposure, whereas the health relevance at low exposure levels might not even be an issue. This paper describes a scientifically based, but pragmatic safety assessment approach for unknown substances present at low exposure levels in food contact matrices. This complex mixture safety assessment strategy (CoMSAS) enables one to distinguish toxicologically relevant from toxicologically less relevant substances, when related to their respective levels of exposure, and allows one to focus on the substances of potential health concern. In particular, substances for which exposure will be below certain thresholds may be considered not of health relevance in case specific classes of substances are excluded. This can reduce the amount of work needed for identification, characterisation and evaluation of unknown substances at low concentration. The CoMSAS approach is presented in this paper using a safety assessment of unknown NIAS that may migrate from three carton samples. PMID:24237267

  19. A novel safety assessment strategy for non-intentionally added substances (NIAS) in carton food contact materials.

    PubMed

    Koster, Sander; Rennen, Monique; Leeman, Winfried; Houben, Geert; Muilwijk, Bas; van Acker, Frederique; Krul, Lisette

    2014-01-01

    One of the main challenges in food contact materials research is to prove that the presence of non-intentionally added substances (NIAS) is not a safety issue. Migration extracts may contain many unknown substances present at low concentrations. It is difficult and time-consuming to identify all these potential NIAS and concurrently to assess their health risk upon exposure, whereas the health relevance at low exposure levels might not even be an issue. This paper describes a scientifically based, but pragmatic safety assessment approach for unknown substances present at low exposure levels in food contact matrices. This complex mixture safety assessment strategy (CoMSAS) enables one to distinguish toxicologically relevant from toxicologically less relevant substances, when related to their respective levels of exposure, and allows one to focus on the substances of potential health concern. In particular, substances for which exposure will be below certain thresholds may be considered not of health relevance in case specific classes of substances are excluded. This can reduce the amount of work needed for identification, characterisation and evaluation of unknown substances at low concentration. The CoMSAS approach is presented in this paper using a safety assessment of unknown NIAS that may migrate from three carton samples.

  20. 75 FR 43097 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-23

    .... Discussion On October 24, 2008, we issued AD 2008-23-19, Amendment 39-15740 (73 FR 71534, November 25, 2008...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have... Amendment 39-15740 (73 FR 71534, November 25, 2008), and adding the following new AD: ] The Boeing...

  1. Boeing F4B-4

    NASA Technical Reports Server (NTRS)

    1932-01-01

    The Boeing F4B-4 was seen to differ from earlier F4Bs in having a vertical fin with slightly more area. The Boeing model 235 was not fitted with a NACA cowling, but rather the less efficient 'Townend' ring around the Pratt & Whitney Wasp radials cylinders. This aircraft was much used by both the Navy and the Army Air Corps in the late 1920's and early 1930's. The Army variation was known as the P-12E. The engine cowling was a British development known as the 'Townend' ring. It differed from the NACA cowling and was less effective in reducing the drag.

  2. 77 FR 55773 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-11

    ... directive (AD) for all The Boeing Company Model DC-9-81 (MD-81), DC-9-82 (MD-82), DC-9-83 (MD-83), DC-9-87...-140, 1200 New Jersey Avenue SE., Washington, DC 20590, between 9 a.m. and 5 p.m., Monday through... Beach, CA 90846-0001; telephone 206-544-5000, extension 2; fax 206-766-5683; Internet...

  3. 76 FR 13534 - Airworthiness Directives; The Boeing Company Model 767-200, -300, -300F, and -400ER Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-14

    ... proposed AD. Discussion On October 19, 2009, we issued AD 2009-22-13, amendment 39-16066 (74 FR 55755... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... amendment 39-16066 (74 FR 55755, October 29, 2009) and adding the following new AD: The Boeing...

  4. 76 FR 16579 - Airworthiness Directives; The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-24

    ...-08, Amendment 39- 13227 (68 FR 41519, July 14, 2003). That AD applies to all Boeing Model 737-600...- 14666 (71 FR 35781, June 22, 2006). (A correction of that AD was published in the Federal Register on July 3, 2006 (71 FR 37980).) That AD applies to all Model 737 airplanes. That AD requires revising...

  5. 75 FR 35356 - Airworthiness Directives; The Boeing Company Model 747-100, 747-200B, and 747-200F Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-22

    ... 3, 1990, we issued AD 90-15-06, Amendment 39-6653 (55 FR 28600, July 12, 1990), for certain Boeing...-8937 (59 FR 30285, June 13, 1994), for certain Boeing Model 747-100, 747-200B, and 747-200F series... and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic...

  6. 77 FR 32064 - Airworthiness Directives; The Boeing Company Model 747 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-31

    ... 7, 1989, we issued AD 89-15-07, amendment 39-6267 (54 FR 30009, July 18, 1989), for certain Model... gear beam. ] Actions Since Existing AD Was Issued Since we issued AD 89-15-07, amendment 39-6267 (54 FR... Information Since the issuance of AD 89-15-07, amendment 39-6267 (54 FR 30009, July 18, 1989), Boeing...

  7. 78 FR 28767 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-16

    ...We propose to adopt a new airworthiness directive (AD) for certain The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747- 200B, 747-200C, 747-200F, 747-300, 747-400, 747-400D, 747-400F, 747SR, and 747SP series airplanes. This proposed AD was prompted by a report of a disbonded doubler and a skin crack in section 41 of the fuselage, and multiple reports of cracked or missing fastener......

  8. 75 FR 1297 - Airworthiness Directives; Boeing Model 737-600, -700, -700C, -800, -900, and -900ER Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-11

    ... August 28, 2007, we issued AD 2007-18-52, amendment 39-15197 (72 FR 53928, September 21, 2007), for all... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... amendment 39-15197 (72 FR 53928, September 21, 2007) and adding the following new AD: Boeing: Docket No....

  9. 76 FR 47522 - Airworthiness Directives; The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-05

    .... Discussion On June 5, 1995, we issued AD 95-12-17, amendment 39-9268 (60 FR 36981, July 19, 1995), for... a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26..., Amendment 39-9268 (60 FR 36981, July 19, 1995), and adding the following new AD: The Boeing Company:...

  10. 76 FR 60710 - Airworthiness Directives; The Boeing Company Model 737-600, -700, -700C, -800, and -900 Series...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-30

    ... this AD as of September 22, 2010 (75 FR 50859, August 18, 2010). ADDRESSES: For Boeing service... directive (AD) 2010-17-05, Amendment 39-16395 (75 FR 50859, August 18, 2010). That AD applies to the specified products. The NPRM published in the Federal Register on December 20, 2010 (75 FR 79317). That...

  11. 75 FR 8554 - Airworthiness Directives; The Boeing Company Model 747-100, -200B, and -200F Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-25

    ... August 4, 1994, we issued AD 94-17-01, Amendment 39-8996 (59 FR 41653, August 15, 1994), for certain... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... Amendment 39-8996 (59 FR 41653, August 15, 1994) and adding the following new AD: The Boeing Company:...

  12. Boeing TB-29 Superfortress (B-29)

    NASA Technical Reports Server (NTRS)

    1945-01-01

    Boeing TB-29 Superfortress (B-29): Arriving for use with the NACA right at the end of World War II, this Boeing B-29 Superfortress was used for research into hydraulically boosting flight controls. After just over five years of study at Langley, the B-29 was returned to the Air Force.

  13. 75 FR 12670 - Airworthiness Directives; The Boeing Company Model 767 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-17

    ... the Federal Register on July 16, 2009 (74 FR 34513). That NPRM proposed to require inspections for... line issue. However, we disagree that revising the AD is necessary because the statement is designed to... measurement tools. AA notes that paragraph 2.F., ``Special Tooling,'' of Boeing Alert Service Bulletin...

  14. 76 FR 22059 - Airworthiness Directives; The Boeing Company Model 757 Airplanes, and Model 767-200, 767-300, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-20

    ...-09-07, Amendment 39-15488 (73 FR 21811, April 23, 2008), for all Boeing Model 757 airplanes and Model... a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26...-07, Amendment 39-15488 (73 FR 21811, April 23, 2008), and adding the following new AD: The...

  15. 75 FR 17882 - Airworthiness Directives; The Boeing Company Model 737-300, -400, and -500 Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-08

    ... 2009-23-10, Amendment 39-16084 (74 FR 57564, November 9, 2009), for all Model 737-300, -400, and -500... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... Amendment 39-16084 (74 FR 57564, November 9, 2009) and adding the following new AD: The Boeing...

  16. Transonic CFD applications at Boeing

    NASA Technical Reports Server (NTRS)

    Tinoco, E. N.

    1989-01-01

    The use of computational methods for three dimensional transonic flow design and analysis at the Boeing Company is presented. A range of computational tools consisting of production tools for every day use by project engineers, expert user tools for special applications by computational researchers, and an emerging tool which may see considerable use in the near future are described. These methods include full potential and Euler solvers, some coupled to three dimensional boundary layer analysis methods, for transonic flow analysis about nacelle, wing-body, wing-body-strut-nacelle, and complete aircraft configurations. As the examples presented show, such a toolbox of codes is necessary for the variety of applications typical of an industrial environment. Such a toolbox of codes makes possible aerodynamic advances not previously achievable in a timely manner, if at all.

  17. Watermarking requirements for Boeing digital cinema

    NASA Astrophysics Data System (ADS)

    Lixvar, John P.

    2003-06-01

    The enormous economic incentives for safeguarding intellectual property in the digital domain have made forensic watermarking a research topic of considerable interest. However, a recent examination of some of the leading product development efforts reveals that at present there is no effective watermarking implementation that addresses both the fidelity and security requirements of high definition digital cinema. If Boeing Digital Cinema (BDC, a business unit of Boeing Integrated Defense Systems) is to succeed in using watermarking as a deterrent to the unauthorized capture and distribution of high value cinematic material, the technology must be robust, transparent, asymmetric in its insertion/detection costs, and compatible with all the other elements of Boeing's multi-layered security system, including its compression, encryption, and key management services.

  18. 76 FR 61033 - Airworthiness Directives; The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-03

    ... (68 FR 4367, January 29, 2003). That AD applies to the specified products. The SNPRM published in the Federal Register on January 11, 2011 (76 FR 1552). The original NPRM (73 FR 64568, October 30, 2008... Boeing and Continental Airlines concur with the SNPRM (76 FR 1552, January 11, 2011). Request...

  19. 75 FR 55455 - Airworthiness Directives; The Boeing Company Model 737-700 (IGW) Series Airplanes Equipped With...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-13

    ..., Auxiliary Fuel Tanks'' as suggested by PATS. Requests To Extend Compliance Time Boeing, Global Jet (Global... Model 737-700 (IGW) Series Airplanes Equipped With Auxiliary Fuel Tanks Installed in Accordance With... fuel tanks. This AD results from fuel system reviews conducted by the manufacturer. We are issuing...

  20. Commercial Crew Program: Boeing Breakout Video

    NASA Video Gallery

    NASA and The Boeing Company of Houston signed a funded Space Act Agreement (SAA) in March 2011 for the company’s CST-100. Under the $92.3 million agreement, NASA’s Commercial Crew Program (...

  1. Advanced composite stabilizer for Boeing 737 aircraft

    NASA Technical Reports Server (NTRS)

    1978-01-01

    Activities related to development of an advanced composites stabilizer for the Boeing 737 commercial transport are reported. Activities include discussion of criteria and objectives, design loads, the fatigue spectrum definition to be used for all spectrum fatigue testing, fatigue analysis, manufacturing producibility studies, the ancillary test program, quality assurance, and manufacturing development.

  2. Rotorcraft technology at Boeing Vertol: Recent advances

    NASA Technical Reports Server (NTRS)

    Shaw, John; Dadone, Leo; Wiesner, Robert

    1988-01-01

    An overview is presented of key accomplishments in the rotorcraft development at Boeing Vertol. Projects of particular significance: high speed rotor development and the Model 360 Advanced Technology Helicopter. Areas addressed in the overview are: advanced rotors with reduced noise and vibration, 3-D aerodynamic modeling, flight control and avionics, active control, automated diagnostics and prognostics, composite structures, and drive systems.

  3. Advanced composite elevator for Boeing 727 aircraft

    NASA Technical Reports Server (NTRS)

    1978-01-01

    Detail design activities are reported for a program to develop an advanced composites elevator for the Boeing 727 commercial transport. Design activities include discussion and results of the ancillary test programs, sustaining efforts, weight status, manufacturing producibility studies, quality assurance development, and production status.

  4. Technology transfer personnel exchange at the Boeing Company

    SciTech Connect

    Antoniak, Z.I.

    1993-03-01

    The objective of the exchange was to transfer Pacific Northwest Laboratory (PNL) technology and expertise in advanced ceramic fabric composites (ACFC) to the Boeing Defense Space Group (Boeing Aerospace). Boeing Aerospace was especially interested in applying PNL-developed ACFC technology to its current and future spacecraft and space missions. Boeing has on-going independent research and development (R D) programs on advanced radiators and heat pipes, therefore, PNL research in ceramic fabric heat pipes was of particular interest to Boeing. Thus, this exchange assisted in the transfer of PNL's ACFC heat pipe technology and other, related research capabilities to private industrial application. The project was proposed as an initial step in building a long-term collaborative relationship between Boeing and PNL that may result in future Cooperative Research and Development Agreements (CRADAs) and/or other types of collaborative efforts.

  5. Technology transfer personnel exchange at the Boeing Company

    SciTech Connect

    Antoniak, Z.I.

    1993-03-01

    The objective of the exchange was to transfer Pacific Northwest Laboratory (PNL) technology and expertise in advanced ceramic fabric composites (ACFC) to the Boeing Defense & Space Group (Boeing Aerospace). Boeing Aerospace was especially interested in applying PNL-developed ACFC technology to its current and future spacecraft and space missions. Boeing has on-going independent research and development (R&D) programs on advanced radiators and heat pipes, therefore, PNL research in ceramic fabric heat pipes was of particular interest to Boeing. Thus, this exchange assisted in the transfer of PNL`s ACFC heat pipe technology and other, related research capabilities to private industrial application. The project was proposed as an initial step in building a long-term collaborative relationship between Boeing and PNL that may result in future Cooperative Research and Development Agreements (CRADAs) and/or other types of collaborative efforts.

  6. Boeing's High Voltage Solar Tile Test Results

    NASA Technical Reports Server (NTRS)

    Reed, Brian J.; Harden, David E.; Ferguson, Dale C.; Snyder, David B.

    2002-01-01

    Real concerns of spacecraft charging and experience with solar array augmented electrostatic discharge arcs on spacecraft have minimized the use of high voltages on large solar arrays despite numerous vehicle system mass and efficiency advantages. Boeing's solar tile (patent pending) allows high voltage to be generated at the array without the mass and efficiency losses of electronic conversion. Direct drive electric propulsion and higher power payloads (lower spacecraft weight) will benefit from this design. As future power demand grows, spacecraft designers must use higher voltage to minimize transmission loss and power cable mass for very large area arrays. This paper will describe the design and discuss the successful test of Boeing's 500-Volt Solar Tile in NASA Glenn's Tenney chamber in the Space Plasma Interaction Facility. The work was sponsored by NASA's Space Solar Power Exploratory Research and Technology (SERT) Program and will result in updated high voltage solar array design guidelines being published.

  7. Potential for Sonic Boom Reduction of the Boeing HSCT

    NASA Technical Reports Server (NTRS)

    Haglund, George T.

    1999-01-01

    The HSR sonic boom technology program includes a goal of reducing the objectionable aspects of sonic boom. Earlier HSCT sonic boom studies considered achieving significant sonic boom reduction by the use of arrow-wing planforms and detailed shaping of the airplane to produce shaped waveforms (non N-waves) at the ground. While these design efforts were largely successful, the added risk and cost of the airplanes were judged to be unacceptable. The objective of the current work is to explore smaller configuration refinements that could lead to reduced sonic boom impact, within design and operational constraints. A somewhat modest target of 10% reduction in sonic boom maximum overpressure was selected to minimize the effect on the configuration performance. This work was a joint NASA/Industry effort, utilizing the respective strengths of team members at Boeing, NASA Langley, and NASA Ames. The approach used was to first explore a wide range of modifications and airplane characteristics for their effects on sonic boom and drag, using classical Modified Linear Theory (MLT) methods. CFD methods were then used to verify promising, modifications and to analyze modifications for which the MLT methods were not appropriate. The tea m produced a list of configuration changes with their effects on sonic boom and, in some cases, an estimate of the drag penalty. The most promising modifications were applied to produce a boom-softened derivative of the baseline Boeing High Speed Civil Transport (HSCT) configuration. This boom-softened configuration was analyzed in detail for the reduce sonic boom impact and also for the effect of the configuration modifications on drag, weight, and overall performance relative to the baseline.

  8. 77 FR 64711 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-23

    ... of the operational program software (OPS) of the flight control computers (FCCs). This new AD requires an inspection for part numbers of the operational program software of the flight control computers... (70 FR 17603, April 7, 2005). ADDRESSES: For service information identified in this AD, contact...

  9. 78 FR 23694 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-22

    ... airplanes. This proposed AD was prompted by a report of a broken forward support fitting at the inboard... Floor, Room W12-140, 1200 New Jersey Avenue SE., Washington, DC 20590. Hand Delivery: Deliver to Mail... substantive verbal contact we receive about this proposed AD. Discussion We received a report of a...

  10. 78 FR 49978 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ... we issued AD 2002-10-11, we have received three reports of severe corrosion in the area affected by... your comments. We specifically invite comments on the overall regulatory, economic, environmental, and... report summarizing each substantive verbal contact we receive about this proposed AD. Discussion On...

  11. 78 FR 9 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-02

    ..., 2005 (70 FR 36821, June 27, 2005). ADDRESSES: For service information identified in this AD, contact... proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2005-13-27, Amendment 39-14164 (70 FR... Register on January 19, 2012 (77 FR 2669). That NPRM proposed to continue to require repetitive...

  12. 78 FR 21236 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-10

    ..., 2008 (73 FR 37786, July 2, 2008). ADDRESSES: For service information identified in this AD, contact... rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2008-13-20, Amendment 39-15583 (73 FR 37786, July 2..., 2012 (77 FR 49396). That NPRM proposed to continue to require repetitive inspections for signs...

  13. 76 FR 62667 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-11

    ... airplanes. This proposed AD was prompted by reports of water leaking into electrical and electronic equipment in the main equipment center, which could result in an electrical short and potential loss of... substantive verbal contact we receive about this proposed AD. Discussion We have received reports of...

  14. 78 FR 20229 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-04

    ... as of September 9, 2010 (75 FR 52242, August 25, 2010). The Director of the Federal Register approved... (75 FR 21499, April 26, 2010). ADDRESSES: For service information identified in this AD, contact... proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2010-17-19, Amendment 39-16413 (75...

  15. Boeing XF2B-1 (F2B-1)

    NASA Technical Reports Server (NTRS)

    1931-01-01

    Boeing XF2B-1 (F2B-1): Serving as the prototype for the F2B-1 shipboard fighter, the XF2B-1 differed visually in having a pointed spinner and an unbalanced rudder. Like many aircraft of its day, the Boeing model 69 was powered by a Pratt & Whitney Wasp radial engine.

  16. Advanced composite stabilizer for Boeing 737 aircraft

    NASA Technical Reports Server (NTRS)

    1978-01-01

    Activities related to development of an advanced composites stabilizer for the Boeing 737 commercial transport are reported. Activities include discussion of the design and weight status, stiffness requirements, the finite element model, test programs, quality assurance, and manufacturing producibility studies. Design details of the graphite/epoxy components are virtually complete. Emphasis is placed on the metal and fiberglass trailing edge components. The bending and torsional stiffness properties are satisfactory for both stability/control and for flutter requirements. The finite element model input geometry is revised to reflect the latest changes to production drawings.

  17. Boeing-AX Jet-Effects Model

    NASA Technical Reports Server (NTRS)

    1994-01-01

    This model of the Boeing A/FX (Advanced Attack/Fighter) Aircraft was photographed between test runs in NASA Langley Research Center's 16-Foot Transonic Tunnel. Testing was conducted to determine the effects of the jet exhaust on the aerodynamic characteristics of the aircraft afterbody. The A/FX program was a Navy effort to obtain a next-generation replacement for the A-6 and F/A-18. The A/FX program evolved into the current multi-service JSF (Joint Strike Fighter) program.

  18. 76 FR 19278 - Airworthiness Directives; The Boeing Company Model 747-100, 747-100B, 747-100B SUD, 747-200B, 747...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-07

    ...-15-10, Amendment 39-15139 (72 FR 41438, July 30, 2007), for all Boeing Model 747 airplanes. A correction of that AD was published in the Federal Register on September 21, 2007 (72 FR 53923), which...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not...

  19. 75 FR 47245 - Airworthiness Directives; The Boeing Company Model 747-400, 747-400D, and 747-400F Series...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-05

    .... Related AD 2009-13- 03, Amendment 39-15942 (74 FR 31169, June 30, 2009), applies to Boeing Model 747-400... Procedures (44 FR 11034, February 26, 1979), and 3. Will not have a significant economic impact, positive or... performance and consequent collision with terrain and obstacles or forced landing of the airplane. DATES:...

  20. Final Technical Report. Project Boeing SGS

    SciTech Connect

    Bell, Thomas E.

    2014-12-31

    Boeing and its partner, PJM Interconnection, teamed to bring advanced “defense-grade” technologies for cyber security to the US regional power grid through demonstration in PJM’s energy management environment. Under this cooperative project with the Department of Energy, Boeing and PJM have developed and demonstrated a host of technologies specifically tailored to the needs of PJM and the electric sector as a whole. The team has demonstrated to the energy industry a combination of processes, techniques and technologies that have been successfully implemented in the commercial, defense, and intelligence communities to identify, mitigate and continuously monitor the cyber security of critical systems. Guided by the results of a Cyber Security Risk-Based Assessment completed in Phase I, the Boeing-PJM team has completed multiple iterations through the Phase II Development and Phase III Deployment phases. Multiple cyber security solutions have been completed across a variety of controls including: Application Security, Enhanced Malware Detection, Security Incident and Event Management (SIEM) Optimization, Continuous Vulnerability Monitoring, SCADA Monitoring/Intrusion Detection, Operational Resiliency, Cyber Range simulations and hands on cyber security personnel training. All of the developed and demonstrated solutions are suitable for replication across the electric sector and/or the energy sector as a whole. Benefits identified include; Improved malware and intrusion detection capability on critical SCADA networks including behavioral-based alerts resulting in improved zero-day threat protection; Improved Security Incident and Event Management system resulting in better threat visibility, thus increasing the likelihood of detecting a serious event; Improved malware detection and zero-day threat response capability; Improved ability to systematically evaluate and secure in house and vendor sourced software applications; Improved ability to continuously monitor

  1. Boeing CST-100 Mock-Up Undergoes Airbag Stabilization Test

    NASA Video Gallery

    The Boeing Company's mock-up CST-100 spacecraft was put through water landing development tests Oct. 1-5, 2012, at Bigelow Aerospace's headquarters outside of Las Vegas. Engineers with Bigelow have...

  2. Boeing infrared sensor (BIRS) calibration facility

    NASA Technical Reports Server (NTRS)

    Hazen, John D.; Scorsone, L. V.

    1990-01-01

    The Boeing Infrared Sensor (BIRS) Calibration Facility represents a major capital investment in optical and infrared technology. The facility was designed and built for the calibration and testing of the new generation large aperture long wave infrared (LWIR) sensors, seekers, and related technologies. Capability exists to perform both radiometric and goniometric calibrations of large infrared sensors under simulated environmental operating conditions. The system is presently configured for endoatmospheric calibrations with a uniform background field which can be set to simulate the expected mission background levels. During calibration, the sensor under test is also exposed to expected mission temperatures and pressures within the test chamber. Capability exists to convert the facility for exoatmospheric testing. The configuration of the system is described along with hardware elements and changes made to date are addressed.

  3. Water Injection Feasibility for Boeing 747 Aircraft

    NASA Technical Reports Server (NTRS)

    Daggett, David L.

    2005-01-01

    Can water injection be offered at a reasonable cost to large airplane operators to reduce takeoff NO( sub x) emissions? This study suggests it may be possible. This report is a contract deliverable to NASA Glenn Research Center from the prime contractor, The Boeing Commercial Airplane Company of Seattle, WA. This study was supported by a separate contract to the Pratt & Whitney Engine Company of Hartford, CT (contract number NNC04QB58P). Aviation continues to grow and with it, environmental pressures are increasing for airports that service commercial airplanes. The feasibility and performance of an emissions-reducing technology, water injection, was studied for a large commercial airplane (e.g., Boeing 747 with PW4062 engine). The primary use of the water-injection system would be to lower NOx emissions while an important secondary benefit might be to improve engine turbine life. A tradeoff exists between engine fuel efficiency and NOx emissions. As engines improve fuel efficiency, by increasing the overall pressure ratio of the engine s compressor, the resulting increased gas temperature usually results in higher NOx emissions. Low-NO(sub x) combustors have been developed for new airplanes to control the increases in NO(sub x) emissions associated with higher efficiency, higher pressure ratio engines. However, achieving a significant reduction of NO(sub x) emissions at airports has been challenging. Using water injection during takeoff has the potential to cut engine NO(sub x) emissions some 80 percent. This may eliminate operating limitations for airplanes flying into airports with emission constraints. This study suggests an important finding of being able to offer large commercial airplane owners an emission-reduction technology that may also save on operating costs.

  4. 78 FR 42720 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-17

    ... airplane reaching its limit of validity (LOV) of the engineering data that support the established... the overall regulatory, economic, environmental, and energy aspects of this proposed AD. We will... personal information you provide. We will also post a report summarizing each substantive verbal contact...

  5. 78 FR 33012 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-03

    ..., Amendment 39-15838 (74 FR 11013, March 16, 2009), we have received a report indicating that three skin..., environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing... also post a report summarizing each substantive verbal contact we receive about this proposed...

  6. 78 FR 42895 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-18

    ... intended to support the airplane reaching its limit of validity (LOV) of the engineering data that support... regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments... provide. We will also post a report summarizing each substantive verbal contact we receive about...

  7. 78 FR 19093 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-29

    ... housing assembly of the packboard release mechanism to determine if its surface treatment has been sealed... 206-544-5000, extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com . For Air Cruisers service information identified in this AD, contact Air Cruisers Company, 1747 State Route 34, Wall,...

  8. 77 FR 2666 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-19

    ... determine if its surface treatment has been sealed, and if unsealed, replacing the housing assembly with a... ; Internet https://www.myboeingfleet.com . For Air Cruisers service information identified in this AD, contact Air Cruisers Company, 1747 State Route 34, Wall, New Jersey 07727-3935; telephone: (732)...

  9. Boeing's STAR-FODB test results

    NASA Astrophysics Data System (ADS)

    Fritz, Martin E.; de la Chapelle, Michael; Van Ausdal, Arthur W.

    1995-05-01

    Boeing has successfully concluded a 2 1/2 year, two phase developmental contract for the STAR-Fiber Optic Data Bus (FODB) that is intended for future space-based applications. The first phase included system analysis, trade studies, behavior modeling, and architecture and protocal selection. During this phase we selected AS4074 Linear Token Passing Bus (LTPB) protocol operating at 200 Mbps, along with the passive, star-coupled fiber media. The second phase involved design, build, integration, and performance and environmental test of brassboard hardware. The resulting brassboard hardware successfully passed performance testing, providing 200 Mbps operation with a 32 X 32 star-coupled medium. This hardware is suitable for a spaceflight experiment to validate ground testing and analysis and to demonstrate performace in the intended environment. The fiber bus interface unit (FBIU) is a multichip module containing transceiver, protocol, and data formatting chips, buffer memory, and a station management controller. The FBIU has been designed for low power, high reliability, and radiation tolerance. Nine FBIUs were built and integrated with the fiber optic physical layer consisting of the fiber cable plant (FCP) and star coupler assembly (SCA). Performance and environmental testing, including radiation exposure, was performed on selected FBIUs and the physical layer. The integrated system was demonstrated with a full motion color video image transfer across the bus while simultaneously performing utility functions with a fiber bus control module (FBCM) over a telemetry and control (T&C) bus, in this case AS1773.

  10. 75 FR 81 - Special Conditions: Boeing Model 787-8 Airplane; Overhead Flightcrew Rest Compartment Occupiable...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-04

    ... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Boeing Model 787-8 Airplane; Overhead... conditions for the Boeing Model 787-8 airplane. This airplane will have novel or unusual design features... for other novel or unusual design features of the Boeing Model 787-8 airplanes. DATES: We must...

  11. Ground Shake Test of the Boeing Model 360 Helicopter Airframe

    NASA Technical Reports Server (NTRS)

    Reed, D. A.; Gabel, R.

    1989-01-01

    Boeing Helicopters, together with other U.S. Helicopter manufacturers, is engaged in a finite element applications program designed to emplace in the U.S. a superior capability to utilize finite element analysis models in support of helicopter airframe structurel design. This program was given the acronym DAMVIBS (Design Analysis Methods for VIBrationS). The test plan is reviewed and results are presented for a shake test of the Boeing Model 360 helicopter. Results of the test will serve as the basis for validation of a finite element vibration model of the helicopter.

  12. 78 FR 26233 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-06

    ... to the specified products. That NPRM published in the Federal Register on November 18, 2011 (76 FR... seal. Revised Service Information Since we published the NPRM (76 FR 71472, November 18, 2011), Boeing... presents the comments received on the proposal (76 FR 71472, November 18, 2011) and the FAA's response...

  13. 77 FR 24835 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-26

    ... the Federal Register on October 11, 2011 (76 FR 62663). The original NPRM (75 FR 15357, March 29, 2010... comments received on the SNPRM (76 FR 62663, October 11, 2011) and the FAA's response to each comment. Supportive Comment Boeing concurs with the contents of the SNPRM (76 FR 62663, October 11, 2011). Request...

  14. 77 FR 731 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-06

    ... Register on April 19, 2011 (76 FR 21815). The original NPRM was published in the Federal Register on April 28, 2008 (73 FR 22840). The supplemental NPRM proposed to require repetitive inspections.... Supportive Comments Boeing concurred with the content of the supplemental NPRM (76 FR 21815, April 19,...

  15. 77 FR 55681 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-11

    ... (76 FR 72863). For certain airplanes, that NPRM proposed to require using redefined flight cycle... on the proposal (76 FR 72863, November 28, 2011) and the FAA's response. Request To Correct Certain Fatigue Cracking Assertions Boeing reported that the NPRM (76 FR 72863, November 28, 2011), in...

  16. Boeing to Rank Colleges by Measuring Graduates' Job Success

    ERIC Educational Resources Information Center

    Basken, Paul

    2008-01-01

    Boeing Company, the Chicago-based aerospace giant, has spent the past year matching internal data from employee evaluations with information about the colleges its engineers attended. It has used that analysis to create a ranking system, which it plans to unveil in the coming month, that will show which colleges have produced the workers it…

  17. 78 FR 22172 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-15

    ... published in the Federal Register on October 26, 2011 (76 FR 66200). That NPRM proposed to require... thickness of the secondary fuel barrier, and corrective actions if necessary. Actions Since NPRM (76 FR 66200, October 26, 2011) Was Issued The NPRM (76 FR 66200, October 26, 2011) referred to Boeing...

  18. 78 FR 35749 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-14

    ... specified products. That NPRM published in the Federal Register on December 4, 2012 (77 FR 71731). That NPRM... the proposal (77 FR 71731, December 4, 2012) and the FAA's response to each comment. Concurrence With NPRM (77 FR 71731, December 4, 2012) Boeing concurred with the content of the NPRM (77 FR...

  19. 78 FR 22182 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-15

    ... products. That NPRM published in the Federal Register on September 12, 2012 (77 FR 56170). That NPRM... on the proposal (77 FR 56170, September 12, 2012) and the FAA's response to each comment. Concurrence With NPRM (77 FR 56170, September 12, 2012) Boeing concurs with the content of the proposed rule (77...

  20. 78 FR 49913 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ... Register on May 3, 2013 (78 FR 25905). The NPRM proposed to require repetitive high frequency eddy current... received. Boeing stated that it supports the NPRM (78 FR 25905, May 3, 2013). Fedex stated that the NPRM (78 FR 25905, May 3, 2013) will be effective for twenty of its Model 727-200 airplanes, the...

  1. RIGHT ENGINE MAINTENANCE ON BOEING 737200. THE COWLING OF THE ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    RIGHT ENGINE MAINTENANCE ON BOEING 737-200. THE COWLING OF THE RIGHT ENGINE IS OPEN, AND THE CREW IS WORKING ON THE JACK SCREWS THAT REGULATE THE FLAPS. MECHANICS WILL CHANGE ALL FUEL AND OIL FILTERS AS WELL AS CHECKING CHIP DETECTORS FOR METAL PARTICLES THAT INDICATE BEARING FAILURE. - Greater Buffalo International Airport, Maintenance Hangar, Buffalo, Erie County, NY

  2. 77 FR 52212 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-29

    ... analysis of the predicted crack growth rate is used to establish the repetitive intervals of 1,400 flight cycles. These repetitive intervals must include the variability of crack growth rate between airplanes... inspected by the repairs in the Boeing SRM. This is the main cause for the fatigue cracking addressed...

  3. 78 FR 38550 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-27

    ... Register on March 7, 2013 (78 FR 14719). That NPRM proposed to require repetitive inspections for cracking... received. Boeing supported the NPRM (78 FR 14719, March 7, 2013). Conclusion We reviewed the relevant data... consistent with the intent that was proposed in the NPRM (78 FR 14719, March 7, 2013) for correcting...

  4. 77 FR 63714 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-17

    ... the Federal Register on August 1, 2012 (77 FR 45513). That NPRM proposed to require, for certain... comment received. Boeing supports the NPRM (77 FR 45513, August 1, 2012). Conclusion We reviewed the... minor changes: Are consistent with the intent that was proposed in the NPRM (77 FR 45513, August 1,...

  5. 78 FR 43770 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-22

    ... Register on April 11, 2013 (78 FR 21569). The NPRM proposed to require ] repetitive detailed inspections... Boeing stated that it supports the NPRM (78 FR 21569, April 11, 2013). FedEx stated that the requirements proposed in the NPRM (78 FR 21569, April 11, 2013) would fit within the planned scheduled maintenance...

  6. 77 FR 37781 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-25

    ... specified products. That NPRM published in the Federal Register on December 30, 2011 (76 FR 82210). That... following presents the comments received on the proposal (76 FR 82210, December 30, 2011) and the FAA's... Boeing and United Airlines requested that we revise the NPRM (76 FR 82210, December 30, 2011) to refer...

  7. 78 FR 70211 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-25

    ... specified products. The NPRM published in the Federal Register on April 22, 2013 (78 FR 23694). The NPRM... comments received on the proposal (78 FR 23964, April 22, 2013) and the FAA's response to each comment. Supportive Comment Boeing stated that it concurs with the NPRM (78 FR 23964, April 22, 2013). Request...

  8. 77 FR 3579 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-25

    ... products. That NPRM was published in the Federal Register on March 14, 2011 (76 FR 13541). That NPRM... agrees with the intent of the NPRM (76 FR 13541, March 14, 2011). Continental Airlines (Continental... Information American, Boeing, and an anonymous commenter requested the NPRM (76 FR 13541, March 14, 2011)...

  9. 78 FR 58487 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-24

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... control at an altitude insufficient for recovery, or controlled flight into terrain or obstacles. DATES... terrain or obstacles. Relevant Service Information We reviewed Boeing Special Attention Service...

  10. 78 FR 66254 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-05

    ... (g) of the NPRM (78 FR 22435, April 16, 2013). Boeing stated that the post-repair and post... necessary; and repetitive post-repair and post-modification inspections, and corrective actions if necessary... corrective actions if necessary; repetitive post-repair and post- modification inspections, and...

  11. VIEW OF BOEING 737200 FUSELAGE FROM TOP LEVEL OF TAIL ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    VIEW OF BOEING 737-200 FUSELAGE FROM TOP LEVEL OF TAIL DOCK AND. A NEW SAFETY CABLE FROM THE TAIL DOCK WILL ALLOW INSPECTORS TO WALK UP AND DOWN THE FUSELAGE TO CHECK FOR CRACKS OR MISSING FASTENERS. - Greater Buffalo International Airport, Maintenance Hangar, Buffalo, Erie County, NY

  12. Model BOE Block Program for Rural Schools. Final Report.

    ERIC Educational Resources Information Center

    Spooner, Kendrick L.

    A one-year evaluation was conducted of the Exemplary Business and Office Education (BOE) Program as implemented in seven rural Colorado schools. The individualized program featured a two-period block core curriculum with three or more optional areas of study. Evaluation objectives were to describe the exemplary projects in light of the…

  13. 77 FR 6692 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-09

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska...-100, -200, -200C, -300, -400, and -500 series airplanes equipped with analog transient suppression... Transient Suppression Device Installation Applicable to Boeing 737-100 through -500 Airplanes...

  14. 77 FR 12170 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-29

    ... specified products. That NPRM published in the Federal Register on January 22, 2010 (75 FR 3660). That NPRM... if necessary. Actions Since Issuance of NPRM (75 FR 3660, January 22, 2010) The NPRM (75 FR 3660... response to each comment. Supportive Comment Boeing concurred with the content of the NPRM (75 FR...

  15. 77 FR 32433 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-01

    ...@boeing.com ; Internet: https://www.myboeingfleet.com . You may review copies of the referenced service... published in the Federal Register on June 3, 2010 (75 FR 31327). That NPRM proposed to require a detailed... actions if necessary. Actions Since Previous NPRM (75 FR 31327, June 3, 2010) Was Issued Since we...

  16. 77 FR 31758 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-30

    ...; fax 206-766-5680; email me.boecom@boeing.com ; Internet https://www.myboeingfleet.com . You may review... (75 FR 57885). That NPRM proposed to require inspecting for part numbers of the operational program... Since Previous NPRM (75 FR 57885, September 23, 2010) Was Issued Since we issued the previous NPRM...

  17. 77 FR 24355 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-24

    ... specified products. That NPRM was published in the Federal Register on June 29, 2011 (76 FR 38072). That... (76 FR 38072, June 29, 2011) and the FAA's response to each comment. Requests to Reference Service... revise the NPRM (76 FR 38072, June 29, 2011) to refer to Boeing Service Bulletin Information Notice...

  18. 77 FR 20505 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-05

    .... That SNPRM was published in the Federal Register on January 3, 2011 (76 FR 28). The original NPRM (74 FR 53436, October 19, 2009) proposed to require replacing the power control relays for the fuel boost... FR 28, January 3, 2011) and the FAA's response to each comment. Boeing concurs with the contents...

  19. 78 FR 49906 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ..., 2013 (78 FR 25662). The NPRM proposed to require repetitive inspections of the left- and right-side... have considered the comments received. Boeing stated that it supports the NPRM (78 FR 25662, May 2, 2013). FedEx Express commented that it has four airplanes that will be affected by the NPRM (78...

  20. 77 FR 65803 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-31

    ... Register on August 1, 2012 (77 FR 45515). That NPRM proposed to require repetitive inspections for cracks... have considered the comment received. Boeing supports the NPRM (77 FR 45515, August 1, 2012... determined that these minor changes: Are consistent with the intent that was proposed in the NPRM (77...

  1. Hairy AdS solitons

    NASA Astrophysics Data System (ADS)

    Anabalón, Andrés; Astefanesei, Dumitru; Choque, David

    2016-11-01

    We construct exact hairy AdS soliton solutions in Einstein-dilaton gravity theory. We examine their thermodynamic properties and discuss the role of these solutions for the existence of first order phase transitions for hairy black holes. The negative energy density associated to hairy AdS solitons can be interpreted as the Casimir energy that is generated in the dual filed theory when the fermions are antiperiodic on the compact coordinate.

  2. Value Added?

    ERIC Educational Resources Information Center

    UCLA IDEA, 2012

    2012-01-01

    Value added measures (VAM) uses changes in student test scores to determine how much "value" an individual teacher has "added" to student growth during the school year. Some policymakers, school districts, and educational advocates have applauded VAM as a straightforward measure of teacher effectiveness: the better a teacher, the better students…

  3. Contact Dermatitis

    MedlinePlus

    ... care Kids’ zone Video library Find a dermatologist Contact dermatitis Overview Contact dermatitis: Many health care workers ... to touching her face while wearing latex gloves. Contact dermatitis: Overview Almost everyone gets this type of ...

  4. Language Contact.

    ERIC Educational Resources Information Center

    Nelde, Peter Hans

    1995-01-01

    Examines the phenomenon of language contact and recent trends in linguistic contact research, which focuses on language use, language users, and language spheres. Also discusses the role of linguistic and cultural conflicts in language contact situations. (13 references) (MDM)

  5. Status of the Boeing Dish Engine Critical Component Project

    SciTech Connect

    Brau, H.W.; Diver, R.B.; Nelving, H.; Stone, K.W.

    1999-01-08

    The Boeing Company's Dish Engine Critical Component (DECC) project started in April of 1998. It is a continuation of a solar energy program started by McDonnell Douglas (now Boeing) and United Stirling of Sweden in the mid 1980s. The overall objectives, schedule, and status of this project are presented in this paper. The hardware test configuration, hardware background, operation, and test plans are also discussed. A summary is given of the test data, which includes the daily power performance, generated energy, working-gas usage, mirror reflectivity, solar insolation, on-sun track time, generating time, and system availability. The system performance based upon the present test data is compared to test data from the 1984/88 McDonnell Douglas/United Stirling AB/Southem California Edison test program. The test data shows that the present power, energy, and mirror performance is comparable to when the hardware was first manufactured 14 years ago.

  6. X-1-2 on Ramp with Boeing B-29

    NASA Technical Reports Server (NTRS)

    1949-01-01

    The Bell Aircraft Corporation X-1-2 sitting on the ramp at NACA High- Speed Flight Research Station with the Boeing B-29 launch ship behind. The B-29 was fondly referred to as 'Fertile Myrtle.' The painting near the nose depicts a stork carrying a bundle which is symbolic of the Mothership launching her babe (X-1-2). The pilot access door is open to the cockpit of the X-1-2 aircraft.

  7. Nde Challenges with Future Commercial Aircraft-A Boeing Perspective

    NASA Astrophysics Data System (ADS)

    Kollgaard, J. R.; LaRiviere, S. G.

    2008-02-01

    Commercial aircraft have undergone revolutionary changes in design, configuration and materials. This produces new challenges to the NDE community ranging from process controls of raw materials, to testing and fabrication of structural components, to service damage assessments. As we drive NDE up the value stream, it will become imperative to understand variousprocess parameters and their relationship to product quality. NDE may play a key role in characterizing and controlling those parameters. In production, inspection has become a critical aspect in the processing of large, unitized structures. Penetrant, radiographic, and magnetic particle techniques are less applicable while ultrasonics has taken on a critical role, earlier in the build process. NDE data are acquired over large areas at rates far faster than before, creating challenges in the time required to analyze and document the data. Qualified inspectors, equipment, and techniques are essential. In the field, eddy current and shear wave ultrasonic methods, long a mainstay of aircraft maintenance, are beginning to yield to ultrasonic techniques involving C-scans and linear arrays. The building of new-generation airplanes has revealed shortcomings in existing NDE technology and in some cases enhanced the case for non-traditional methods. This paper will review Boeing's experience with NDE of advanced structures, in particular those present on the Boeing 787, and summarize the Boeing outlook for future NDE needs.

  8. X-1-2 on ramp with Boeing B-29

    NASA Technical Reports Server (NTRS)

    1949-01-01

    The Bell Aircraft Corporation X-1-2 Sitting on the ramp at NACA High-Speed Flight Research Station with the Boeing B-29 launch ship behind. The painting near the nose of the B-29 depicts a stork carrying a bundle which is symbolic of the Mothership launching her babe (X-1-2). The pilot access door is open to the cockpit of the X-1-2 aircraft. On the X-1-2's fin is the old NACA shield, which was later replaced with a yellow band and the letters 'NACA' plus wings that were both black. There were four versions of the Bell X-1 rocket-powered research aircraft that flew at the NACA High-Speed Flight Research Station, Edwards, California. The bullet-shaped X-1 aircraft were built by Bell Aircraft Corporation, Buffalo, N.Y. for the U.S. Army Air Forces (after 1947, U.S. Air Force) and the National Advisory Committee for Aeronautics (NACA). The X-1 Program was originally designated the XS-1 for EXperimental Sonic. The X-1's mission was to investigate the transonic speed range (speeds from just below to just above the speed of sound) and, if possible, to break the 'sound barrier.' Three different X-1s were built and designated: X-1-1, X-1-2 (later modified to become the X-1E), and X-1-3. The basic X-1 aircraft were flown by a large number of different pilots from 1946 to 1951. The X-1 Program not only proved that humans could go beyond the speed of sound, it reinforced the understanding that technological barriers could be overcome. The X-1s pioneered many structural and aerodynamic advances including extremely thin, yet extremely strong wing sections; supersonic fuselage configurations; control system requirements; powerplant compatibility; and cockpit environments. The X-1 aircraft were the first transonic-capable aircraft to use an all-moving stabilizer. The flights of the X-1s opened up a new era in aviation. The first X-1 was air-launched unpowered from a Boeing B-29 Superfortress on Jan. 25, 1946. Powered flights began in December 1946. On Oct. 14, 1947, the X-1

  9. Impact evaluation of lighting retrofit projects at Boeing Commercial Airplane Group under The Energy $avings Plan

    SciTech Connect

    Sullivan, G.P.; Oens, M.A.; Spanner, G.E.

    1994-01-01

    This impact evaluation of two lighting retrofit projects that were recently installed at Boeing Commercial Airplane Group (Boeing) was conducted for the Bonneville Power Administration (Bonneville) as part of an evaluation of its Energy $avings Plan (E$P) Program. The first project was a light-fixture and lighting control retrofit, consisting of five individual measures installed in Building 40-05. The second project was a retrofit of all parking lot lighting on the site. The objective of this impact evaluation was to assess how much electrical energy is being saved at Boeing as a result of the E$P projects and to determine how much the savings cost Bonneville and the region. The impact of the project was evaluated with a combination of engineering analysis, financial analysis, interviews, and submittal reviews (Boeing`s proposals and completion reports).

  10. STS-65 crewmembers participate in bench review at Boeing Building

    NASA Technical Reports Server (NTRS)

    1994-01-01

    Attired in clean suits, STS-65 Payload Commander (PLC) Richard J. Hieb (left) and Payload Specialist Chiaki Mukai examine the contents of a stowage locker during a bench review at Boeing's Flight Equipment Processing Facility (FEPF) near the Johnson Space Center (JSC). In the background, Commander Robert D. Cabana inspects additional equipment to be carried aboard the Space Shuttle Columbia, Orbiter Vehicle (OV) 102, for the scheduled July flight of the second International Microgravity Laboratory (IML-2) mission. Mukai represents Japan's National Space Development Agency (NASDA). Photo taken by NASA JSC contract photographer Scott A. Wickes.

  11. Boeing Low-Thrust Geosynchronous Transfer Mission Experience

    NASA Technical Reports Server (NTRS)

    Poole, Mark; Ho, Monte

    2007-01-01

    Since 2000, Boeing 702 satellites have used electric propulsion for transfer to geostationary orbits. The use of the 25cm Xenon Ion Propulsion System (25cm XIPS) results in more than a tenfold increase in specific impulse with the corresponding decrease in propellant mass needed to complete the mission when compared to chemical propulsion[1]. In addition to more favorable mass properties, with the use of XIPS, the 702 has been able to achieve orbit insertions with higher accuracy than it would have been possible with the use of chemical thrusters. This paper describes the experience attained by using the 702 XIPS ascent strategy to transfer satellite to geosynchronous orbits.

  12. Boeing Delta II rocket for FUSE launch arrives at CCAS

    NASA Technical Reports Server (NTRS)

    1999-01-01

    At Launch Pad 17A, Cape Canaveral Air Station (CCAS), the first stage of a Boeing Delta II rocket is moved into the tower. The rocket is targeted to launch NASA's Far Ultraviolet Spectroscopic Explorer (FUSE), developed by The Johns Hopkins University under contract to Goddard Space Flight Center, Greenbelt, Md. FUSE will investigate the origin and evolution of the lightest elements in the universe, hydrogen and deuterium. In addition, the FUSE satellite will examine the forces and process involved in the evolution of the galaxies, stars and planetary systems by investigating light in the far ultraviolet portion of the electromagnetic spectrum. FUSE is scheduled to be launched June 23 at CCAS.

  13. Boeing Satellite Television Airplane Receiving System (STARS) performance

    NASA Technical Reports Server (NTRS)

    Vertatschitsch, Edward J.; Fitzsimmons, George W.

    1995-01-01

    Boeing Defense and Space Group is developing a Satellite Television Airplane Receiving System (STARS) capable of delivering Direct Broadcast Satellite (DBS) television to an aircraft in-flight. This enables a new service for commercial airplanes that will make use of existing and future DBS systems. The home entertainment satellites, along with STARS, provide a new mobile satellite communication application. This paper will provide a brief background of the antenna issues associated with STARS for commercial airplanes and then describe the innovative Boeing phased-array solution to these problems. The paper then provides a link budget of the STARS using the Hughes DBS as an example, but the system will work with all of the proposed DBS satellites in the 12.2-12.7 GHz band. It concludes with operational performance calculations of the STARS system, supported by measured test data of an operational 16-element subarray. Although this system is being developed for commercial airplanes, it is well suited for a wide variety of mobile military and other commercial communications systems in air, on land and at sea. The applications include sending high quality video for the digital battlefield and large volumes of data on the information superhighway at rates in excess of 350 Mbps.

  14. DIS in AdS

    SciTech Connect

    Albacete, Javier L.; Kovchegov, Yuri V.; Taliotis, Anastasios

    2009-03-23

    We calculate the total cross section for the scattering of a quark-anti-quark dipole on a large nucleus at high energy for a strongly coupled N = 4 super Yang-Mills theory using AdS/CFT correspondence. We model the nucleus by a metric of a shock wave in AdS{sub 5}. We then calculate the expectation value of the Wilson loop (the dipole) by finding the extrema of the Nambu-Goto action for an open string attached to the quark and antiquark lines of the loop in the background of an AdS{sub 5} shock wave. We find two physically meaningful extremal string configurations. For both solutions we obtain the forward scattering amplitude N for the quark dipole-nucleus scattering. We study the onset of unitarity with increasing center-of-mass energy and transverse size of the dipole: we observe that for both solutions the saturation scale Q{sub s} is independent of energy/Bjorken-x and depends on the atomic number of the nucleus as Q{sub s}{approx}A{sup 1/3}. Finally we observe that while one of the solutions we found corresponds to the pomeron intercept of {alpha}{sub P} = 2 found earlier in the literature, when extended to higher energy or larger dipole sizes it violates the black disk limit. The other solution we found respects the black disk limit and yields the pomeron intercept of {alpha}{sub P} = 1.5. We thus conjecture that the right pomeron intercept in gauge theories at strong coupling may be {alpha}{sub P} = 1.5.

  15. Runway Incursion Prevention System ADS-B and DGPS Data Link Analysis Dallas-Fort Worth International Airport

    NASA Technical Reports Server (NTRS)

    Timmerman, J.; Jones, Denise R. (Technical Monitor)

    2001-01-01

    A Runway Incursion Prevention System (RIPS) was tested at the Dallas - Ft. Worth International Airport in October 2000. The system integrated airborne and ground components to provide both pilots and controllers with enhanced situational awareness, supplemental guidance cues, a real-time display of traffic information, and warning of runway incursions in order to prevent runway incidents while also improving operational capability. Rockwell Collins provided and supported a prototype Automatic Dependent Surveillance - Broadcast (ADS-B) system using 1090 MHz and a prototype Differential GPS (DGPS) system onboard the NASA Boeing 757 research aircraft. This report describes the Rockwell Collins contributions to the RIPS flight test, summarizes the development process, and analyzes both ADS-B and DGPS data collected during the flight test. In addition, results are report on interoperability tests conducted between the NASA Advanced General Aviation Transport Experiments (AGATE) ADS-B flight test system and the NASA Boeing 757 ADS-B system.

  16. Boeing 747 with Smoke Generator Installed for Vortex Study

    NASA Technical Reports Server (NTRS)

    1979-01-01

    The Boeing 747 used for wingtip vortex research flights sits on the ramp at NASA's Flight Research Center in Edwards, California. Note the smoke generator mounted underneath the jet's wing. Smoke from underwing smoke generators made it possible for researchers to actually see the vortices created by the 747's wings in flight. In 1974 the NASA Flight Research Center (later Dryden Flight Research Center, Edwards, California) used a Boeing 747 as part of the overall NASA study of trailing vortices. Trailing vortices are the invisible flow of spiraling air that trails from the wings of large aircraft and can 'upset' smaller aircraft flying behind them. The 747 that NASA used was on loan from the Johnson Space Center where it was part of the Space Shuttle Program. The data gathered in the 747 studies complemented data from the previous (1973-74) joint NASA Flight Research Center and Federal Aviation Administration (FAA) Boeing727 wake vortices study. Six smoke generators were installed under the wings of the 747 to provide a visual image of the trailing vortices. The object of the experiments was to test different configurations and mechanical devices on the747 that could be used to break up or lessen the strength of the vortices. The results of the tests could lead to shorter spacing between landings and takeoffs, which, in turn, could alleviate air-traffic congestion. For approximately 30 flights the 747 was flown using various combinations of wing air spoilers in an attempt to reduce wake vortices. To evaluate the effectiveness of the different configurations, chase aircraft were flown into the vortex sheets to probe their strengths and patterns at different times. Two of the chase planes used were the Flight Research Center's Cessna T-37 and the NASA Ames Research Center's Learjet. These aircraft represented the types of smaller business jets and other small aircraft that might encounter large passenger aircraft on approach or landings around major airports or in

  17. 78 FR 6247 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-30

    ... proposed AD. Discussion On June 6, 2012, we issued AD 2012-12-15, Amendment 39-17095 (77 FR 42964, July 23...-15517 (73 FR 25974, May 8, 2008). AD 2012-12-15 requires revising the maintenance program by... Since Existing AD Was Issued Since we issued AD 2012-12-15, Amendment 39-17095 (77 FR 42964, July...

  18. 77 FR 69747 - Airworthiness Directives; The Boeing Company Model Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-21

    ... required by the existing AD. This AD was prompted by several reports of fatigue cracking in the frame... the existing AD. We are issuing this AD to detect and correct fatigue cracking of the outboard and... other publications listed in this AD as of August 18, 1995 (60 FR 36981, July 19, 1995). ADDRESSES:...

  19. 78 FR 54387 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-04

    ..., dated March 24, 1994, which is not incorporated by reference in this AD. (q) Alternative Methods of..., Amendment 39-6490 (55 FR 8374, March 7, 1990). (vi) AD 2006-24-02, Amendment 39-14831 (71 FR 67445, November..., Amendment 39-6801 (Docket No. 90-NM- 110-AD; 55 FR 46652, November 6, ] 1990), (``AD 90-23-14''). AD...

  20. 78 FR 4042 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-18

    ... incorporation by reference of a certain other publication listed in this AD as of August 24, 2007 (72 FR 44753... to supersede airworthiness directive (AD) 2008-05- 10, Amendment 39-15404 (73 FR 11347, March 3, 2008). (AD 2008-05-10 superseded AD 2007-16-13, Amendment 39-15152 (72 FR 44753, August 9, 2007); and AD...

  1. 77 FR 58330 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-20

    ... proposed AD. Discussion On August 11, 2010, we issued AD 2010-17-19, Amendment 39-16413 (75 FR 52242... Since Existing AD (AD 2010-17-19, Amendment 39-16413 (75 FR 52242, August 25, 2010)) Was Issued The preamble to AD 2010-17-19, Amendment 39-16413 (75 FR 52242, August 25, 2010), specifies that we...

  2. 1. General view of Boeing EC135 looking aircraft. View to ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    1. General view of Boeing EC-135 looking aircraft. View to west. - Offutt Air Force Base, Looking Glass Airborne Command Post, Looking Glass Aircraft, On Operational Apron covering northeast half of Project Looking Glass Historic District, Bellevue, Sarpy County, NE

  3. Diffraction and pulse slippage in the Boeing 1 kW FEL oscillator

    SciTech Connect

    Blau, J.; Wong, R.K.; Colson, W.B.

    1995-12-31

    A four-dimensional simulation in x, y, z, and t, including betatron motion of the electrons, is used to study the combined effects of diffraction, pulse slippage and desynchronism in the Boeing 1 kW FEL oscillator.

  4. Advanced Rotorcraft Transmission (ART) program-Boeing helicopters status report

    NASA Technical Reports Server (NTRS)

    Lenski, Joseph W., Jr.; Valco, Mark J.

    1991-01-01

    The Advanced Rotorcraft Transmission (ART) program is structured to incorporate key emerging material and component technologies into an advanced rotorcraft transmission with the intention of making significant improvements in the state of the art (SOA). Specific objectives of ART are: (1) Reduce transmission weight by 25 pct.; (2) Reduce transmission noise by 10 dB; and (3) Improve transmission life and reliability, while extending Mean Time Between Removal to 5000 hr. Boeing selected a transmission sized for the Tactical Tilt Rotor (TTR) aircraft which meets the Future Air Attack Vehicle (FAVV) requirements. Component development testing will be conducted to evaluate the high risk concepts prior to finalizing the advanced transmission configuration. The results of tradeoff studies and development test which were completed are summarized.

  5. Boeing Delta II rocket for FUSE launch arrives at CCAS

    NASA Technical Reports Server (NTRS)

    1999-01-01

    After its arrival at Launch Pad 17A, Cape Canaveral Air Station (CCAS), the first stage of a Boeing Delta II rocket is raised to a vertical position. The rocket is targeted to launch NASA's Far Ultraviolet Spectroscopic Explorer (FUSE), developed by The Johns Hopkins University under contract to Goddard Space Flight Center, Greenbelt, Md. FUSE will investigate the origin and evolution of the lightest elements in the universe, hydrogen and deuterium. In addition, the FUSE satellite will examine the forces and process involved in the evolution of the galaxies, stars and planetary systems by investigating light in the far ultraviolet portion of the electromagnetic spectrum. FUSE is scheduled to be launched June 23 at CCAS.

  6. Boeing Delta II rocket for FUSE launch arrives at CCAS

    NASA Technical Reports Server (NTRS)

    1999-01-01

    At Launch Pad 17A, Cape Canaveral Air Station (CCAS), the first stage of a Boeing Delta II rocket is raised for its journey up the launch tower. The rocket is targeted to launch NASA's Far Ultraviolet Spectroscopic Explorer (FUSE), developed by The Johns Hopkins University under contract to Goddard Space Flight Center, Greenbelt, Md. FUSE will investigate the origin and evolution of the lightest elements in the universe, hydrogen and deuterium. In addition, the FUSE satellite will examine the forces and process involved in the evolution of the galaxies, stars and planetary systems by investigating light in the far ultraviolet portion of the electromagnetic spectrum. FUSE is scheduled to be launched June 23 at CCAS.

  7. Boeing Delta II rocket for FUSE launch arrives at CCAS

    NASA Technical Reports Server (NTRS)

    1999-01-01

    At Launch Pad 17A, Cape Canaveral Air Station (CCAS), the first stage of a Boeing Delta II rocket is ready to be lifted into the tower. The rocket is targeted to launch NASA's Far Ultraviolet Spectroscopic Explorer (FUSE), developed by The Johns Hopkins University under contract to Goddard Space Flight Center, Greenbelt, Md. FUSE will investigate the origin and evolution of the lightest elements in the universe,hydrogen and deuterium. In addition, the FUSE satellite will examine the forces and process involved in the evolution of the galaxies, stars and planetary systems by investigating light in the far ultraviolet portion of the electromagnetic spectrum. FUSE is scheduled to be launched June 23 at CCAS.

  8. Mars Polar Lander is mated with Boeing Delta II rocket

    NASA Technical Reports Server (NTRS)

    1998-01-01

    Workers mate the Mars Polar Lander (top) to the Boeing Delta II rocket at Launch Complex 17B, Cape Canaveral Air Station. The rocket is scheduled to launch Jan. 3, 1999. The lander is a solar-powered spacecraft designed to touch down on the Martian surface near the northern- most boundary of the south pole in order to study the water cycle there. The lander also will help scientists learn more about climate change and current resources on Mars, studying such things as frost, dust, water vapor and condensates in the Martian atmosphere. It is the second spacecraft to be launched in a pair of Mars Surveyor '98 missions. The first is the Mars Climate Orbiter, which was launched aboard a Delta II rocket from Launch Complex 17A on Dec. 11, 1998.

  9. Mars Polar Lander is mated with Boeing Delta II rocket

    NASA Technical Reports Server (NTRS)

    1998-01-01

    Inside the gantry at Launch Complex 17B, Cape Canaveral Air Station, the Mars Polar Lander spacecraft is lowered to mate it with the Boeing Delta II rocket that will launch it on Jan. 3, 1999. The lander is a solar-powered spacecraft designed to touch down on the Martian surface near the northern-most boundary of the south pole in order to study the water cycle there. The lander also will help scientists learn more about climate change and current resources on Mars, studying such things as frost, dust, water vapor and condensates in the Martian atmosphere. It is the second spacecraft to be launched in a pair of Mars Surveyor'98 missions. The first is the Mars Climate Orbiter, which was launched aboard a Delta II rocket from Launch Complex 17A on Dec. 11, 1998.

  10. Mars Polar Lander is mated with Boeing Delta II rocket

    NASA Technical Reports Server (NTRS)

    1998-01-01

    At Launch Complex 17B, Cape Canaveral Air Station, workers get ready to remove the protective wrapping on the Mars Polar Lander to be launched aboard a Boeing Delta II rocket on Jan. 3, 1999. The lander is a solar-powered spacecraft designed to touch down on the Martian surface near the northern-most boundary of the south pole in order to study the water cycle there. The lander also will help scientists learn more about climate change and current resources on Mars, studying such things as frost, dust, water vapor and condensates in the Martian atmosphere. It is the second spacecraft to be launched in a pair of Mars Surveyor'98 missions. The first is the Mars Climate Orbiter, which was launched aboard a Delta II rocket from Launch Complex 17A on Dec. 11, 1998.

  11. Simultaneous cabin and ambient ozone measurements on two Boeing 747 airplanes, volume 1

    NASA Technical Reports Server (NTRS)

    Perkins, P. J.; Holdeman, J. D.; Nastrom, G. D.

    1979-01-01

    Measurements of zone concentrations both outside and in the cabin of an airline operated Boeing 747SP and Boeing 747-100 airliner are presented. Plotted data and the corresponding tables of observations taken at altitude between the departure and destination airports of each flight are arranged chronologically for the two aircraft. Data were taken at five or ten minute intervals by automated instrumentation used in the NACA Global Atmospheric Sampling Program.

  12. Boeing 18-Inch Fan Rig Broadband Noise Test

    NASA Technical Reports Server (NTRS)

    Ganz, Ulrich W.; Joppa, Paul D.; Patten, Timothy J.; Scharpf, Daniel F.

    1998-01-01

    The purposes of the subject test were to identify and quantify the mechanisms by which fan broadband noise is produced, and to assess the validity of such theoretical models of those mechanisms as may be available. The test was conducted with the Boeing 18-inch fan rig in the Boeing Low-Speed Aeroacoustic Facility (LSAF). The rig was designed to be particularly clean and geometrically simple to facilitate theoretical modeling and to minimize sources of interfering noise. The inlet is cylindrical and is equipped with a boundary layer suction system. The fan is typical of modern high-by-pass ratio designs but is capable of operating with or without fan exit guide vanes (stators), and there is only a single flow stream. Fan loading and tip clearance are adjustable. Instrumentation included measurements of fan performance, the unsteady flow field incident on the fan and stators, and far-field and in-duct acoustic fields. The acoustic results were manipulated to estimate the noise generated by different sources. Significant fan broadband noise was found to come from the rotor self-noise as measured with clean inflow and no boundary layer. The rotor tip clearance affected rotor self-noise somewhat. The interaction of the rotor with inlet boundary layer turbulence is also a significant source, and is strongly affected by rotor tip clearance. High level noise can be generated by a high-order nonuniform rotating at a fraction of the fan speed, at least when tip clearance and loading are both large. Stator-generated noise is the loudest of the significant sources, by a small margin, at least on this rig. Stator noise is significantly affected by propagation through the fan.

  13. 76 FR 72863 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-28

    ... issued AD 85-12-01, Amendment 39-5073 (50 FR 26690, June 28, 1985), for Model 707 and 720 airplanes, as revised (AD 85-12-01 R1, Amendment 39-5439 (51 FR 36002, October 8, 1986). That AD requires structural...-5439 (51 FR 36002, October 8, 1986). Differences Between the Proposed AD and Service...

  14. 76 FR 72853 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-28

    ... availability of this material at the FAA, call (425) 227-1221. Examining the AD Docket You may examine the AD... 2008-19-03, Amendment 39-15670 (73 FR 56958, October 1, 2008), for certain Model 737-300, -400, and.... Actions Since Existing AD Was Issued Since we issued AD 2008-19-03, Amendment 39-15670 (73 FR...

  15. 77 FR 18719 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-28

    ... proposed AD. Discussion On December 17, 2009, we issued AD 2009-26-17, Amendment 39-16156 (74 FR 69268... consequent loss of the airplane. Actions Since Existing AD 2009-26-17, Amendment 39-16156 (74 FR 69268, December 31, 2009) Was Issued Since we issued AD 2009-26-17, Amendment 39-16156 (74 FR 69268, December...

  16. 78 FR 39193 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-01

    ... proposed AD. Discussion On July 14, 2010, we issued AD 2010-15-08, Amendment 39-16374 (75 FR 43803, July 27... controllability of the airplane. Actions Since Existing AD (75 FR 43803, July 27, 2010) Was Issued Since we issued AD 2010-15-08, Amendment 39-16374 (75 FR 43803, July 27, 2010), we received a report of failure...

  17. 78 FR 57542 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-19

    ... proposed AD. Discussion On June 7, 2012, we issued AD 2012-12-08, Amendment 39-17088 (77 FR 37781, June 25... correction of AD 2012-12-08 was published in the Federal Register on July 20, 2012 (77 FR 42625)). AD 2012-12... 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR...

  18. 77 FR 61731 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-11

    ... proposed AD. Discussion On May 1, 2007, we issued AD 2007-11-08, Amendment 39-15065 (72 FR 28594, May 22... damaged parts to the manufacturer. Actions Since Existing AD (72 FR 28594, May 22, 2007) Was Issued In the preamble to AD 2007-11-08, Amendment 39-15065 (72 FR 28594, May 22, 2007), the FAA indicated that...

  19. 77 FR 32057 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-31

    ... proposed AD. Discussion On November 12, 2009, we issued AD 2009-24-08, Amendment 39-16096 (74 FR 62217... decompression of the airplane. Actions Since Existing AD 2009-24-08, Amendment 39-16096 (74 FR 62217, November 27, 2009) Was Issued Since we issued AD 2009-24-08, Amendment 39-16096 (74 FR 62217, November...

  20. Contact hysteroscopy.

    PubMed

    Baggish, M S; Barbot, J

    1983-06-01

    In 1907 innovations in optics and illumination made by Maximilian Nitze were applied to hysteroscopy by Charles David, who wrote a treatise of hysteroscopy. David improved illumination by placing an electric incandescent bulb at the intrauterine end of his endoscope and also sealed the distal end of the tube with a piece of glass. The history of the contact endoscope that the authors personally used is connected to the invention by Vulmiere (1952) of a revolutionary illumination process in endoscopy--the "cold light" process. The components of cold light consist of a powerful external light source that is transmitted via a special optical guide into the endometrial cavity. The 1st application of his principle (1963) was an optical trochar contained in a metallic sheath. This simple endoscope was perfected, and in 1973 Barbot and Parent, in France, began to use it to examine the uterine cavity. Discussion focuses on methods, instrumentation, method for examination (grasping the instrument, setup, light source, anesthesia, dilatation, technique, and normal endometrium); cervical neoplasia; nonneoplastic lesions of the endometrium (endometrial polyp, submucous myoma, endometrial hyperplasia); intrauterine device localization; neoplastic lesions of the endometrium; precursors (adenocarcinoma); hysteroscopy in pregnancy (embryoscopy, hydatidiform mole, postpartum hemorrhage, incomplete abortion, spontaneous abortion, induced abortions, and amnioscopy); and examinations of children and infants. The contact endoscope must make light contact with the structure to be viewed. The principles of contact endoscopy depend on an interpretation of color, contour, vascular pattern, and a sense of touch. These are computed together and a diagnosis is made on the basis of previously learned clinical pathologic correlations. The contact endoscope is composed of 3 parts: an optical guide; a cylindric chamber that collects and traps ambient light; and a magnifying eyepiece. The phase of

  1. 78 FR 22215 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-15

    ...-07, Amendment 39-13666 (69 FR 33561, June 16, 2004), for certain Model 757 series airplanes equipped with Rolls-Royce RB211 engines. (AD 2004-12-07 superseded AD 99-24-07, Amendment 39-11431 (64 FR 66370... Existing AD Was Issued Since we issued AD 2004-12-07, Amendment 39-13666 (69 FR 33561, June 16, 2004),...

  2. 78 FR 40050 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-03

    .... Discussion On June 19, 2009, we issued AD 2009-14-02, Amendment 39-15951 (74 FR 30919, June 29, 2009), on the products listed above, which superseded AD 2002-26-15, Amendment 39-13003 (68 FR 476, January 6, 2003). AD... Since Existing AD 2009-14-02, Amendment 39-15951 (74 FR 30919, June 29, 2009) Was Issued Since we...

  3. 78 FR 24338 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-25

    ... airplanes. This AD was prompted by reports of early fatigue cracks at chem-mill areas on the crown skin panels. This AD requires repetitive inspections for cracking of the fuselage skin along chem-mill steps at certain crown skin and shear wrinkle areas, and repair if necessary. We are issuing this AD...

  4. 77 FR 40481 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-10

    ... AD also results from reports of cracks on the forward and aft tension tie channels at station (STA... lead to rapid in-flight decompression. DATES: This AD is effective August 14, 2012. The Director of the... certain other publication listed in this AD as of February 16, 2006 (71 FR 1947, January 12,...

  5. 77 FR 36134 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ... availability of this material at the FAA, call 425-227-1221. Examining the AD Docket You may examine the AD... 39-15670 (73 FR 56958, October 1, 2008). That AD applies to the specified products. The NPRM published in the Federal Register on November 28, 2011 (76 FR 72853). That NPRM proposed to continue...

  6. 78 FR 27310 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-10

    ... airplanes: AD 2007-16-12, Amendment 39-15151 (72 FR 44740, August 9, 2007), requires changes to existing... 767-200, -300, and -400ER series airplanes: AD 2008-23-15, Amendment 39-15736 (73 FR 70267, November..., -600, - 700, -700C, -800, and -900 series airplanes: AD 2009-12-06, Amendment 39-15929 (74 FR...

  7. 78 FR 37497 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-21

    ... this AD action, the proposed rule (77 FR 47329, August 8, 2012), the regulatory evaluation, any... with a notice of proposed rulemaking (NPRM) to rescind AD 2009-22-13, Amendment 39-16066 (74 FR 55755... on August 8, 2012 (77 FR 47329). That NPRM proposed to rescind AD 2009-22-13, which requires...

  8. 78 FR 56182 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-12

    ... August 27, 2012 (77 FR 51722), is withdrawn. ADDRESSES: You may examine the AD docket on the Internet at... (77 FR 51722, August 27, 2012), the regulatory evaluation, any comments received, and other... (NPRM) to rescind AD 2008-06-03, Amendment 39-15415 (73 FR 13081, March 12, 2008). AD 2008-06-03...

  9. 78 FR 60660 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-02

    ... lap joint repair specified in paragraph (g) of AD 2002-07-08, Amendment 39-12702 (67 FR 17917, April... incorporation by reference of a certain other publication listed in the AD as of October 13, 2004 (69 FR 54206... rulemaking (SNPRM) to amend 14 CFR part 39 to supersede AD 2004-18-06, Amendment 39-13784 (69 FR...

  10. 78 FR 27315 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-10

    ... runway excursion. Related Rulemaking We issued AD 2001-22-13, Amendment 39-12492 (66 FR 55075, November 1... requirements for the other airplane models affected by AD 2001-22-13, Amendment 39-12492 (66 FR 55075, November... the requirements of AD 2001-22- 13, Amendment 39-12492 (66 FR 55075, November 1, 2001), for Model...

  11. 77 FR 46340 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-03

    ... proposed AD. Discussion On December 10, 2007, we issued AD 2007-26-05, Amendment 39-15307 (72 FR 71212..., Amendment 39-15307 (72 FR 71212, December 17, 2007), specifies that we consider the requirements ``interim... repetitive inspections required by AD 2007-26-05, Amendment 39-15307 (72 FR 71212, December 17, 2007)....

  12. 77 FR 47329 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-08

    .... Discussion On October 19, 2009, we issued AD 2009-22-13, Amendment 39-16066 (74 FR 55755, October 29, 2009... consequent loss of the airplane. Actions Since Existing AD (74 FR 55755, October 29, 2009) Was Issued Since we issued AD 2009-22-13, Amendment 39-16066 (74 FR 55755, October 29, 2009), we discovered that...

  13. 78 FR 27010 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-09

    ... (67 FR 11891, March 18, 2002). The Director of the Federal Register approved the incorporation by reference of a certain other publication listed in this AD as of January 2, 2001 (65 FR 78913, December 18... AD 2000-25-07, Amendment 39-12041 (65 FR 78913, December 18, 2000); and AD 2002-05-07, Amendment...

  14. 78 FR 63903 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-25

    ...-0867. Other Relevant Rulemaking This proposed AD is related to AD 2012-08-13, Amendment 39-17030 (77 FR..., Amendment 39-17030 (77 FR 24357, April 24, 2012). FAA's Determination We are proposing this AD because we... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4)...

  15. 77 FR 75827 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-26

    ... incorporation by reference of a certain publication listed in this AD as of October 3, 2012 (77 FR 52212, August... other publication listed in this AD as of May 24, 2004 (69 FR 25481, May 7, 2004). We must receive any... . SUPPLEMENTARY INFORMATION: Discussion On July 23, 2012, we issued AD 2012-15-15, Amendment 39-17144 (77 FR...

  16. 76 FR 59590 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-27

    ... FR 10917, March 9, 2004), for certain Model 767-200 and -300 series airplanes. That AD requires..., 2005, we issued AD 2005-03-11, Amendment 39-13967 (70 FR 7174, February 11, 2005), corrected on February 28, 2005 (70 FR 12119, March 11, 2005), for certain Model 767 airplanes. That AD...

  17. 77 FR 72200 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-05

    ... airplanes. This AD requires ensuring that lockwire is installed correctly on the engine fuel feed manifold couplings. This AD also requires inspecting the assembly of the engine fuel feed manifold rigid and full flexible couplings. This AD was prompted by reports of fuel leaks due to improperly assembled engine...

  18. 78 FR 49910 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-16

    ... to supersede AD 2008-06-29, Amendment 39-15441 (73 FR 15397, March 24, 2008) (``AD 2008-06-29''). AD..., 2013 (78 FR 15332). The NPRM proposed to continue to require repetitive inspections of the downstop... (78 FR 15332, March 11, 2013) and the FAA's response to each comment. Concurrence With NPRM (78...

  19. 78 FR 24037 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-24

    ...'' electrical faults. We disagree that it is necessary to change the AD. The NPRM (77 FR 23166, April 18, 2012... 18, 2012 (77 FR 23166). That NPRM proposed to require adding design features to detect electrical... this AD. The following presents the comments received on the proposal (77 FR 23166, April 18, 2012)...

  20. Ares I Aerodynamic Testing at the Boeing Polysonic Wind Tunnel

    NASA Technical Reports Server (NTRS)

    Pinier, Jeremy T.; Niskey, Charles J.; Hanke, Jeremy L.; Tomek, William G.

    2011-01-01

    Throughout three full design analysis cycles, the Ares I project within the Constellation program has consistently relied on the Boeing Polysonic Wind Tunnel (PSWT) for aerodynamic testing of the subsonic, transonic and supersonic portions of the atmospheric flight envelope (Mach=0.5 to 4.5). Each design cycle required the development of aerodynamic databases for the 6 degree-of-freedom (DOF) forces and moments, as well as distributed line-loads databases covering the full range of Mach number, total angle-of-attack, and aerodynamic roll angle. The high fidelity data collected in this facility has been consistent with the data collected in NASA Langley s Unitary Plan Wind Tunnel (UPWT) at the overlapping condition ofMach=1.6. Much insight into the aerodynamic behavior of the launch vehicle during all phases of flight was gained through wind tunnel testing. Important knowledge pertaining to slender launch vehicle aerodynamics in particular was accumulated. In conducting these wind tunnel tests and developing experimental aerodynamic databases, some challenges were encountered and are reported as lessons learned in this paper for the benefit of future crew launch vehicle aerodynamic developments.

  1. Mars Polar Lander is mated with Boeing Delta II rocket

    NASA Technical Reports Server (NTRS)

    1998-01-01

    At Launch Complex 17B, Cape Canaveral Air Station, the protective covering on the Mars Polar Lander is lifted up and out of the way. The lander, in the opening below, is being mated to the Boeing Delta II rocket that will launch it on Jan. 3, 1999. The lander is a solar- powered spacecraft designed to touch down on the Martian surface near the northern-most boundary of the south pole in order to study the water cycle there. The lander also will help scientists learn more about climate change and current resources on Mars, studying such things as frost, dust, water vapor and condensates in the Martian atmosphere. It is the second spacecraft to be launched in a pair of Mars Surveyor'98 missions. The first is the Mars Climate Orbiter, which was launched aboard a Delta II rocket from Launch Complex 17A on Dec. 11, 1998.

  2. The BOEING 777 - concurrent engineering and digital pre-assembly

    SciTech Connect

    Abarbanel, B.

    1996-12-31

    The processes created on the 777 for checking designs were called {open_quotes}digital pre-assembly{close_quotes}. Using FlyThru(tm), a spin-off of a Boeing advanced computing research project, engineers were able to view up to 1500 models (15000 solids) in 3d traversing that data at high speed. FlyThru(tm) was rapidly deployed in 1991 to meet the needs of the 777 for large scale product visualization and verification. The digital pre-assembly process has bad fantastic results. The 777 has had far fewer assembly and systems problems compared to previous airplane programs. Today, FlyThru(tm) is installed on hundreds of workstations on almost every airplane program, and is being used on Space Station, F22, AWACS, and other defense projects. It`s applications have gone far beyond just design review. In many ways, FlyThru is a Data Warehouse supported by advanced tools for analysis. It is today being integrated with Knowledge Based Engineering geometry generation tools.

  3. 76 FR 14819 - Special Conditions: Boeing Model 747-8 Series Airplanes; Stairway Between the Main Deck and Upper...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-18

    ...; ] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 25 Special Conditions: Boeing Model... conditions for the Boeing Model 747-8 airplane. This airplane will have novel or unusual design features when... to Type Certificate Number A20WE to include the new Model 747-8 series passenger airplane. The...

  4. 76 FR 31451 - Special Conditions: Boeing Model 747-8 Airplanes; Stairway Between the Main Deck and Upper Deck

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-01

    ... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Boeing Model 747-8 Airplanes; Stairway... special conditions. SUMMARY: These special conditions are issued for Boeing Model 747-8 airplanes. This... Number A20WE to include the new Model 747-8 series passenger airplane. The Model 747-8 is a derivative...

  5. 76 FR 63229 - Airworthiness Directives; The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-12

    .... ``CENTER WING (AND BOEING AUXILIARY) TANK FUEL PUMPS Intentional dry running of a center wing or auxiliary... appropriate FAA Principal Operations Inspector. ``CENTER WING (AND BOEING AUXILIARY) TANK FUEL PUMPS Center... to monitor low pressure lights. For ground operation, center wing (or auxiliary) tank fuel...

  6. 76 FR 15864 - Airworthiness Directives; The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-22

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will.... Relevant Service Information We reviewed Boeing Special Attention Service Bulletin 737-78-1083, dated June... Information Appendix A of Boeing Special Attention Service Bulletin 737-78- 1083, dated June 30,...

  7. Segmented strings in AdS 3

    NASA Astrophysics Data System (ADS)

    Callebaut, Nele; Gubser, Steven S.; Samberg, Andreas; Toldo, Chiara

    2015-11-01

    We study segmented strings in flat space and in AdS 3. In flat space, these well known classical motions describe strings which at any instant of time are piecewise linear. In AdS 3, the worldsheet is composed of faces each of which is a region bounded by null geodesics in an AdS 2 subspace of AdS 3. The time evolution can be described by specifying the null geodesic motion of kinks in the string at which two segments are joined. The outcome of collisions of kinks on the worldsheet can be worked out essentially using considerations of causality. We study several examples of closed segmented strings in AdS 3 and find an unexpected quasi-periodic behavior. We also work out a WKB analysis of quantum states of yo-yo strings in AdS 5 and find a logarithmic term reminiscent of the logarithmic twist of string states on the leading Regge trajectory.

  8. Polarised black holes in AdS

    NASA Astrophysics Data System (ADS)

    Costa, Miguel S.; Greenspan, Lauren; Oliveira, Miguel; Penedones, João; Santos, Jorge E.

    2016-06-01

    We consider solutions in Einstein-Maxwell theory with a negative cosmological constant that asymptote to global AdS 4 with conformal boundary {S}2× {{{R}}}t. At the sphere at infinity we turn on a space-dependent electrostatic potential, which does not destroy the asymptotic AdS behaviour. For simplicity we focus on the case of a dipolar electrostatic potential. We find two new geometries: (i) an AdS soliton that includes the full backreaction of the electric field on the AdS geometry; (ii) a polarised neutral black hole that is deformed by the electric field, accumulating opposite charges in each hemisphere. For both geometries we study boundary data such as the charge density and the stress tensor. For the black hole we also study the horizon charge density and area, and further verify a Smarr formula. Then we consider this system at finite temperature and compute the Gibbs free energy for both AdS soliton and black hole phases. The corresponding phase diagram generalizes the Hawking-Page phase transition. The AdS soliton dominates the low temperature phase and the black hole the high temperature phase, with a critical temperature that decreases as the external electric field increases. Finally, we consider the simple case of a free charged scalar field on {S}2× {{{R}}}t with conformal coupling. For a field in the SU(N ) adjoint representation we compare the phase diagram with the above gravitational system.

  9. Dual-band infrared (DBIR) imaging inspections of Boeing 737 and KC-135 aircraft panels

    SciTech Connect

    Del Grande, N.K.; Dolan, K.W.; Durbin, P.F.; Gorvad, M.R.; Shapiro, A.B.

    1993-08-27

    We apply dual-band infrared (DBIR) imaging as a dynamic thermal tomography tool for wide area inspection of a Boeing 737 aircraft, and several Boeing KC-135 aircraft panels. Our analyses are discussed in this report. After flash-heating the aircraft skin, we record synchronized DBIR images every 40 ms, from onset to 8 seconds after the heat flash. We analyze selective DBIR image ratios which enhance surface temperature contrast and remove surface-emissivity clutter (from dirt, dents, tape, markings, ink, sealants, uneven paint, paint stripper, exposed metal and roughness variations). The Boeing 737 and KC-135 aircraft fuselage panels have varying percent thickness losses from corrosion. We established the correlation of percent thickness loss with surface temperature rise (above ambient) for a partially corroded F-18 wing box structure and several aluminum reference panels. Based on this correlation, lap splice temperatures rise 1{degrees}C per 24 {plus_minus} 5 % material loss at 0.4 s after the heat flash. We show tables, charts and temperature maps of typical lap splice material losses for the riveted (and bonded) Boeing 737, and the riveted (but unbonded) Boeing KC-135. We map the fuselage composite thermal inertia, based on the (inverse) slope of the surface temperature versus inverse square root of time. Composite thermal inertia maps characterize shallow skin defects within the lap splice at early times (<0.3 s) and deeper skin defects within the lap splice at late times (>0.4 s). Late time composite thermal inertia maps depict where corrosion-related thickness losses occur. Lap splice sites on a typical Boeing KC-135 panel with low composite thermal inertia values had high skin-thickness losses from corrosion.

  10. 78 FR 60804 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-02

    .... Discussion On March 25, 2005, we issued AD 2005-07-12, Amendment 39-14036 (70 FR 17596, April 7, 2005), for...-14036 (70 FR 17596, April 7, 2005) Was Issued Since we issued AD 2005-07-12, Amendment 39-14036 (70 FR... restate the requirements of AD 2005-07-12, Amendment 39-14036 (70 FR 17596, April 7, 2005) this...

  11. 77 FR 50411 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-21

    ... the ECS. AD 2008-02-16, Amendment 39-15346 (73 FR 4061, January 24, 2008), applicable to certain Model 767-200 and 767-300 series airplanes. AD 2010-14-01, Amendment 39-16344 (75 FR 38007, July 1, 2010..., 747-400F, 747SR, and 747SP series airplanes. AD 2012-02-09, Amendment 39-16932 (77 FR 5996, February...

  12. Types of Contact Lenses

    MedlinePlus

    ... Consumer Devices Consumer Products Contact Lenses Types of Contact Lenses Share Tweet Linkedin Pin it More sharing ... Orthokeratology (Ortho-K) Decorative (Plano) Contact Lenses Soft Contact Lenses Soft contact lenses are made of soft, ...

  13. Prioritized Contact Transport Stream

    NASA Technical Reports Server (NTRS)

    Hunt, Walter Lee, Jr. (Inventor)

    2015-01-01

    A detection process, contact recognition process, classification process, and identification process are applied to raw sensor data to produce an identified contact record set containing one or more identified contact records. A prioritization process is applied to the identified contact record set to assign a contact priority to each contact record in the identified contact record set. Data are removed from the contact records in the identified contact record set based on the contact priorities assigned to those contact records. A first contact stream is produced from the resulting contact records. The first contact stream is streamed in a contact transport stream. The contact transport stream may include and stream additional contact streams. The contact transport stream may be varied dynamically over time based on parameters such as available bandwidth, contact priority, presence/absence of contacts, system state, and configuration parameters.

  14. 77 FR 33619 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-07

    ... certain other publications listed in this AD as of April 2, 2009 (74 FR 8717, February 26, 2009...-15818 (74 FR 8717, February 26, 2009). That AD applies to the specified products. The NPRM published in the Federal Register on July 19, 2011 (76 FR 42607). That NPRM proposed to continue to...

  15. 78 FR 25372 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-01

    ... published in the Federal Register on September 18, 2012 (77 FR 57529). That NPRM proposed to require... in developing this AD. The following presents the comments received on the proposal (77 FR 57529... the Service Information'' section, and in Note 1 to paragraph (l) of the proposed AD (77 FR...

  16. 77 FR 50414 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-21

    ... an approximate 8-inch crack found in the fuselage skin under the aft drain mast. This proposed AD... are proposing this AD to detect and correct cracking in the fuselage skin and internal support.... and 5 p.m., Monday through Friday, except Federal holidays. For service information identified in...

  17. 77 FR 38547 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-28

    ... AD was prompted by several reports of fatigue cracking at that location, which could result in rapid... to detect and correct such fatigue cracking, which could result in rapid decompression of the.... Discussion On April 9, 1999, we issued AD 99-08-23, Amendment 39-11132 (64 FR 19879, April 23, 1999), for...

  18. 77 FR 73908 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-12

    ... already done. (g) Software Update Within 12 months after the effective date of this AD: Install integrated... control panel (MCP) malfunctions. This AD requires installing new software, replacing the duct assembly... products. That NPRM published in the Federal Register on July 11, 2012 (77 FR 40832). That NPRM proposed...

  19. 77 FR 24643 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-25

    ... terminal blocks of the flight deck windshields. AD 2010-15-01, Amendment 39-16367 (75 FR 39804, July 13... necessary. The most forward flight deck windows are referred to as windshields and named left and right... airplanes. This proposed AD was prompted by a report of in-flight fracture of the right windshield (window...

  20. 78 FR 57053 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-17

    ... chords, inner chord angle of the forward edge frame of the number 5 main entry door cutouts; the frame... and could result in depressurization of the airplane in flight. DATES: This AD is effective October 22... incorporation by reference of a certain other publication listed in this AD as of November 9, 2010 (75 FR...

  1. 78 FR 47549 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-06

    ... cracking is detected in the forward or aft upper door frame, prior to further flight, repair the frame and... for modifying the doors. This AD was prompted by reports of cracking in the forward and aft corner... reference of a certain other publication listed in this AD as of May 9, 2000 (65 FR 17583, April 4,...

  2. 78 FR 21576 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-11

    ...-200, 757-200CB, and 757-200PF airplanes. This proposed AD was prompted by a report that a forward- most cam latch of the forward center cam latch pair on a main cargo door (MCD) broke during flight... proposed AD. Discussion We received a report that the forward-most cam latch on the forward center...

  3. 77 FR 41895 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-17

    ... reference of a certain other publication listed in this AD as of November 5, 2002 (67 FR 61478, October 1..., Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, Washington 98124-2207; telephone... Proposed Rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2002-19-11, Amendment 39-12891 (67...

  4. 78 FR 61164 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-03

    ... Paragraph (h) of the NPRM (78 FR 6251, January 30, 2013) specified inspections to detect, among other things..., extension 1; fax 206-766-5680; Internet https://www.myboeingfleet.com . You may review copies of the... AD Docket You may examine the AD docket on the Internet at http://www.regulations.gov ; or in...

  5. 77 FR 51722 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-27

    ... that AD to prevent electrical energy from lightning, hot shorts, or fault current from entering the... that AD to prevent electrical energy from lightning, hot shorts, or fault current from entering the... specifically invite comments on the overall regulatory, economic, environmental, and energy aspects of...

  6. 78 FR 10499 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-14

    ... listed in this AD as of October 1, 2001 (66 FR 44954, August 27, 2001). ADDRESSES: For service...-20, Amendment 39-12411 (66 FR 44954, August 27, 2001). That AD applies to the specified products. The NPRM published in the Federal Register on October 29, 2012 (77 FR 65501). That NPRM proposed...

  7. 77 FR 59728 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-01

    ... February 4, 2010 (74 FR 69268, December 31, 2009). The Director of the Federal Register approved the incorporation by reference of a certain other publication listed in this AD of September 7, 2006 (71 FR 43962... rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2009-26-17, Amendment 39-16156 (74 FR...

  8. 77 FR 65501 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-29

    ...-17-20, Amendment 39-12411 (66 FR 44954, August 27, 2001), for certain Model 707 airplanes, and Model... AD, Amendment 39-12411 (66 FR 44954, August 27, 2001) Was Issued Since we issued AD 2001-17-20, Amendment 39-12411 (66 FR 44954, August 27, 2001), we have determined through service experience that...

  9. 77 FR 61550 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-10

    ... lap joint repair specified in paragraph (g) of AD 2002-07-08, Amendment 39-12702 (67 FR 17917, April... March 8, 2011 (76 FR 12619). That NPRM proposed to supersede AD 2004-18-06, Amendment 39-13784 (69 FR... stringers. Actions Since Previous NPRM Was Issued Since we issued the previous NPRM (76 FR 12619, March...

  10. 76 FR 66200 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-26

    ... necessary. This proposed AD was prompted by reports that inspections of the wing center section revealed... receive about this proposed AD. Discussion We received reports that inspections of the wing center section... of the secondary fuel vapor barrier of the wing center section, and related investigative...

  11. 78 FR 42411 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-16

    ... issuing this AD to prevent possible ignition sources in the auxiliary (center) fuel tank, main fuel tanks... of certain other publications listed in this AD as of October 1, 2009 (76 FR 43621, August 27, 2009...: Data & Services Management, P. O. Box 3707, MC 2H-65, Seattle, WA 98124-2207; telephone...

  12. 78 FR 15658 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-12

    ... airplanes. This proposed AD was prompted by reports of spanwise cracks and corrosion in the wing center box... skin and rear spar upper chord of the wing center box, which could result in loss of the airplane wing... proposed AD. Discussion We have received reports of spanwise cracks and corrosion in the wing center...

  13. 77 FR 46932 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-07

    ... by reports of cracks of the underwing longeron fittings in the wing center section. This AD requires... result in loss of the primary load path between the fuselage and the wing box, and consequent catastrophic damage to the wing box and failure of the wing. DATES: This AD is effective September 11,...

  14. 77 FR 54850 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-06

    ... sources in the auxiliary (center) fuel tank, main fuel tanks, and surge tanks caused by a wiring short or... Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207... proposed AD. Discussion On August 7, 2009, we issued AD 2009-18-02, Amendment 39-15998 (74 FR 43621,...

  15. 77 FR 49396 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-16

    ...-20, Amendment 39-15583 (73 FR 37786, July 2, 2008), for certain Model 757 airplanes equipped with... Since we issued AD 2008-13-20, Amendment 39-15583 (73 FR 37786, July 2, 2008), we have received reports... of AD 2008-13-20, Amendment 39-15583 (73 FR 37786, July 2, 2008). For certain airplanes,...

  16. 77 FR 12166 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-29

    ... AD 2007-03-01, amendment 39-14912 (72 FR 3939, January 29, 2007). That AD applies to the specified products. The NPRM was published in the Federal Register on January 18, 2011 (76 FR 2848). That NPRM... Correct Figure Reference in Paragraph (i) of the NPRM (76 FR 2848, January 18, 2011) United Airlines...

  17. 77 FR 6518 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-08

    ...-pressure oxygen hoses in the flight compartment. We are proposing this AD to prevent electrical current... corrected, could cause electrical current to pass through the low-pressure oxygen hose internal anti... this AD to prevent electrical current from passing through the low-pressure oxygen hose internal...

  18. 78 FR 17290 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-21

    ... measuring the electrical resistance of the bond from the adapter plate to the airplane structure, and doing corrective actions if necessary. We are issuing this AD to prevent electrical current from flowing through an... Administration is issuing this AD to prevent electrical current from flowing through a motor-operated valve...

  19. 78 FR 63130 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-23

    ... supernumerary ceiling area. We are proposing this AD to prevent electrical current from passing through an... and caused extensive damage to the flight deck. Electrical current passing through an internal, anti... deck. We are issuing this AD to prevent electrical current from passing through an internal,...

  20. 77 FR 41045 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-12

    ... are issuing this AD to prevent electrical current from passing through the low-pressure oxygen hose... damage to the flight deck. We are issuing this AD to prevent electrical current from passing through the... February 8, 2012 (77 FR 6518). That NPRM proposed to require replacing the low-pressure oxygen hoses...

  1. 78 FR 45054 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-26

    ... involving a Honeywell fixed ELT. We are issuing this AD to prevent a fire in the aft crown of the airplane, or to detect and correct discrepancies within the ELT that could cause such a fire. DATES: This AD is.... Discrepancies within the ELT, if not corrected, could cause a fire in the aft crown of the airplane....

  2. 77 FR 21422 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-10

    ... incorporation by reference of a certain other publication listed in the AD as of September 4, 2007 (72 FR 41438, July 30, 2007; as corrected by 72 FR 53923, September 21, 2007). ADDRESSES: For service information... to supersede AD 2007-15-10, Amendment 39-15139 (72 FR 41438, July 30, 2007; as corrected by 72...

  3. 77 FR 3587 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-25

    ... prompted by reports of water accumulation in the forward lower lobe of the forward cargo compartment. This... this AD to prevent water from accumulating in the forward lower lobe of the forward cargo compartment... potential loss of several functions essential for safe flight. DATES: This AD is effective February 29,...

  4. 77 FR 54854 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-06

    ... installing drains and drain tubes to eliminate water accumulation in the dripshield above the M826 cardfile in the main equipment center. Since we issued that AD, we received reports of continued water damage... installing drain tubes. We are proposing this AD to prevent water from exiting over the edge of the...

  5. 77 FR 45513 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-01

    ... warranted. Related Rulemaking We issued AD 2010-17-19, Amendment 39-16413 (75 FR 52242, August 25, 2010), to... 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... report of elevator vibration and bearing swage failures. This proposed AD would require, for...

  6. 78 FR 46538 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-01

    ... airplanes. This proposed AD was prompted by reports indicating that a standard fuel tank access door was located where an impact-resistant access door was required, and stencils were missing from some impact-resistant access doors. This proposed AD would require an inspection of the left- and right-hand wing...

  7. 78 FR 21279 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-10

    ... certain underwing fuel tank access covers with stronger, fire-resistant covers. Since we issued that AD, we received reports of standard access doors installed where impact resistant access doors are required and reports of impact resistant doors without stencils. This proposed AD would require...

  8. 78 FR 40060 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-03

    ... asymmetry and a possible runway excursion. Actions Since Existing AD 2006-26-06, Amendment 39-14864 (71 FR..., Amendment 39-14864 (71 FR 77586, December 27, 2006), with new service information. For Group 1...) of AD 2006-26-06, Amendment 39-14864 (71 FR 77586, December 27, 2006), with new service...

  9. 78 FR 21571 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-11

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and ] (4...-400, -400D, and -400F series airplanes. This proposed AD was prompted by a report of water leakage... proposed AD. Discussion We received a report indicating that water leakage into the main deck cargo WIU...

  10. 77 FR 29857 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-21

    ..., Amendment 39-6768 (55 FR 41510, October 12, 1990). That AD applies to the specified products. The NPRM was published in the Federal Register on June 29, 2011 (76 FR 38074). That NPRM proposed to continue to require... participate in developing this AD. The following presents the comments received on the proposal (76 FR...

  11. 77 FR 24831 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-26

    ... was published in the Federal Register on February 9, 2012 (77 FR 6692). That NPRM proposed to require... opportunity to participate in developing this AD. We received no comments on the NPRM (77 ] FR 6692, February... redesignated Note 1 of the NPRM (77 FR 6692, February 9, 2012) as paragraph (c)(2) of this AD and...

  12. 77 FR 60891 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-05

    ... to supersede AD 89-15-07, Amendment 39-6267 (54 FR 30009, July 18, 1989). That AD applies to the specified products. The NPRM published in the Federal Register on May 31, 2012 (77 FR 32064). That NPRM... the proposal (77 FR 32064, May 31, 2012) and the FAA's response to each comment. Request To...

  13. 78 FR 42415 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-16

    ... -200 series airplanes. AD 87-02-07 required replacement of certain underwing fuel tank access covers with stronger, fire-resistant covers. This new AD also requires inspecting fuel tank access doors to determine that impact-resistant access doors are installed in the correct locations, inspecting...

  14. 77 FR 65506 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-29

    ... modification of the nacelle strut and wing structure, and repair of any damage found during the modification... Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA 98124-2207... proposed AD. Discussion On August 29, 2003, we issued AD 2003-18-05, Amendment 39-13296 (68 FR...

  15. 76 FR 82207 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-30

    ... On January 25, 2011, the FAA issued AD 2011-03-14, Amendment 39- 16598 (76 FR 6529, February 7, 2011... (NPRM) FAA-2011-0258 (76 FR 16579, March 24, 2011), for Model 737-600, -700, -700C, -800, -900, and..., dated August 18, 2011. AD 2011-03-14, Amendment 39-16598 (76 FR 6529, February 7, 2011), and NPRM...

  16. 77 FR 66757 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-07

    .... Discussion On April 18, 2003, we issued AD 2003-08-15, Amendment 39-13128 (68 FR 20341, April 25, 2003), for..., Amendment 39-13128 (68 FR 20341, April 25, 2003) Was Issued Since we issued AD 2003-08-15, Amendment 39-13128 (68 FR 20341, April 25, 2003), we have received reports of lap joint lower row cracking...

  17. 77 FR 22686 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-17

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska...-500 series airplanes. This proposed AD was prompted by reports of chem-mill step cracking on the aft lower lobe fuselage skins. This proposed AD would require inspections of the fuselage skin at the...

  18. 77 FR 32918 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-04

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... butt strap, and cracks in the forward skin and bonded doubler, on one airplane. This proposed AD would... receive about this proposed AD. Discussion We received a report of a severed upper butt strap, and...

  19. 78 FR 27020 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-09

    ... cracking in the web of the aft pressure bulkhead at body station 1016 at the aft fastener row attachment to the ``Y'' chord, various inspections for discrepancies at the aft pressure bulkhead, and related... the existing AD. This AD was prompted by several reports of fatigue cracks in the aft...

  20. 78 FR 78703 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-27

    ... that the aft pressure bulkhead web area is subject to widespread fatigue damage (WFD). This AD requires modifying the aft pressure bulkhead. The modification includes inspecting for cracks around the rivet holes, and repair of any cracking. We are issuing this AD to prevent fatigue cracking of the aft...

  1. 78 FR 60807 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-02

    ...) and (h) of AD 2008-09-13, Amendment 39-15494 (73 FR 24164, May 2, 2008). FAA's Determination We are... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation... airplanes: Certain requirements of AD 2008-09-13, Amendment 39-15494 (73 FR 24164, May 2, 2008), may...

  2. 78 FR 78701 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-27

    ... Register on May 16, 2013 (78 FR 28764). The NPRM proposed to require, depending on airplane configuration... developing this AD. The following presents the comments received on the proposal (78 FR 28764, May 16, 2013... been issued for AD 2011-12-09, Amendment 39-16716 (76 FR 33988, June 10, 2011). The AMOC...

  3. 78 FR 28764 - Airworthiness Directives; The Boeing Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-16

    ... and Maintenance and Inspection Requirements'' (66 FR 23086, May 7, 2001). In addition to new... relay having part number (P/N) 9524G-10674 after AD 2011-12-09, Amendment 39- 16716 (76 FR 33988, June... 39-16716 (76 FR 33988, June 10, 2011), affect all airplanes of this proposed AD. This proposed...

  4. 76 FR 70377 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-14

    ... System Design Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086... Policies and ] Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in.... This proposed AD would require adding design features to detect electrical faults, to detect a...

  5. 77 FR 5386 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-03

    ..., the email address provided in paragraphs (i)(1) and (j) of AD 2011-24-04, Amendment 39-16868 (76 FR... rule is effective February 3, 2012. The effective date for AD 2011-24-04, Amendment 39-16868 (76 FR...: Airworthiness Directive 2011-24-04, amendment 39-16868 (76 FR 73491, November 29, 2011), currently...

  6. 78 FR 22185 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-15

    ... listed in this AD as of January 4, 2010 (74 FR 62217, November 27, 2009). ADDRESSES: For service..., Amendment 39-16096 (74 FR 62217, November 27, 2009). That AD applies to the specified products. The NPRM published in the Federal Register on May 31, 2012 (77 FR 32057). That NPRM proposed to continue to...

  7. 78 FR 59293 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-26

    ... satellite communication (SATCOM) antenna adapter. This proposed AD would require repetitive inspections of... the satellite communication (SATCOM) antenna adapter. We are issuing this AD to detect and correct... 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR...

  8. 76 FR 38074 - Airworthiness Directives; The Boeing Company Model 747-100, 747-100B, 747-200B, 747-200C, 747...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-29

    ... for other airplanes. This proposed AD results from reports of multiple adjacent cracks on an airplane..., environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing... post a report summarizing each substantive verbal contact we receive about this proposed AD....

  9. The trapped-particle instability in the Boeing 1kW FEL oscillator

    SciTech Connect

    Ramos, L.; Blau, J.; Colson, W.B.

    1995-12-31

    The new design for the Boeing High Average Power Free Electron Laser will operate at 1KW average power (0.63 {mu}m) with a peak current of 132A. Simulations are used to investigate the trapped-particle instability and diffraction effects. Incorporating large desynchronism may prove to be a useful method of controlling the trapped-particle instability.

  10. The Boeing Company's Manufacturing Technology Student Internship. Evaluation Report (1994-95).

    ERIC Educational Resources Information Center

    Wang, Changhua; Owens, Thomas R.

    An evaluation was conducted of the Boeing Company's summer internship program for students enrolled in a manufacturing technology program after grades 11, 12, and 13 (first year of community college). The evaluation included the following activities: a review of documents describing the internship structure, student selection process, and…

  11. 76 FR 1979 - Airworthiness Directives; The Boeing Company Model 757 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-12

    ... airplanes. That supplemental NPRM was published in the Federal Register on October 19, 2009 (74 FR 53430... duplication of effort for all parties, including the operators, Boeing, and the engineering branch of the... contained in the engineering procedures manual (EPM), which is incorporated into the general manual...

  12. 75 FR 38391 - Special Conditions: Boeing 757-200 With Enhanced Flight Vision System

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-02

    ... Administration 14 CFR Part 25 Special Conditions: Boeing 757-200 With Enhanced Flight Vision System AGENCY... airplanes, as modified by the Federal Express Corporation, will have an advanced, enhanced-flight-visibility... symbolic flight information. However, the term has also been commonly used in reference to systems...

  13. 77 FR 21861 - Special Conditions: Boeing, Model 777F; Enhanced Flight Vision System

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-12

    ... April 11, 2000 (65 FR 19477-19478), as well as at http://DocketsInfo.dot.gov/ . Docket: Background... Federal Aviation Administration 14 CFR Part 25 Special Conditions: Boeing, Model 777F; Enhanced Flight... feature associated with an advanced, enhanced flight vision system (EFVS). The EFVS consists of a...

  14. 75 FR 68177 - Airworthiness Directives; The Boeing Company Model 757 and 767 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-05

    ... Order 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034... fails, troubleshooting to find wire faults and damaged equipment, and corrective actions if necessary..., troubleshooting to find wire faults, bent connector pins, or damaged equipment. Boeing Special Attention...

  15. AdS duals of matrix strings

    NASA Astrophysics Data System (ADS)

    Morales, Jose F.; Samtleben, Henning

    2003-06-01

    We review recent work on the holographic duals of type II and heterotic matrix string theories described by warped AdS3 supergravities. In particular, we compute the spectra of Kaluza-Klein primaries for type I, II supergravities on warped AdS3 × S7 and match them with the primary operators in the dual two-dimensional gauge theories. The presence of non-trivial warp factors and dilaton profiles requires a modification of the familiar dictionary between masses and 'scaling' dimensions of fields and operators. We present these modifications for the general case of domain wall/QFT correspondences between supergravities on warped AdSd+1 × Sq geometries and super Yang-Mills theories with 16 supercharges.

  16. 77 FR 61542 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-10

    .... Discussion On December 5, 2000, we issued AD 2000-25-07, Amendment 39-12041 (65 FR 78913, December 18, 2000... 2002-05-07, Amendment 39-12675 (67 FR 11891, March 18, 2002), for certain Model 737-100, -200, -200C... ADs 2000-25-07, Amendment 39-12041 (65 FR 78913, December 18, 2000); and 2002-05-07, Amendment...

  17. EDITORIAL: Close contact Close contact

    NASA Astrophysics Data System (ADS)

    Demming, Anna

    2010-07-01

    The development of scanning probe techniques, such as scanning tunnelling microscopy [1], has often been touted as the catalyst for the surge in activity and progress in nanoscale science and technology. Images of nanoscale structural detail have served as an invaluable investigative resource and continue to fascinate with the fantastical reality of an intricate nether world existing all around us, but hidden from view of the naked eye by a disparity in scale. As is so often the case, the invention of the scanning tunnelling microscope heralded far more than just a useful new apparatus, it demonstrated the scope for exploiting the subtleties of electronic contact. The shrinking of electronic devices has been a driving force for research into molecular electronics, in which an understanding of the nature of electronic contact at junctions is crucial. In response, the number of experimental techniques in molecular electronics has increased rapidly in recent years. Scanning tunnelling microscopes have been used to study electron transfer through molecular films on a conducting substrate, and the need to monitor the contact force of scanning tunnelling electrodes led to the use of atomic force microscopy probes coated in a conducting layer as studied by Cui and colleagues in Arizona [2]. In this issue a collaboration of researchers at Delft University and Leiden University in the Netherlands report a new device architecture for the independent mechanical and electrostatic tuning of nanoscale charge transport, which will enable thorough studies of molecular transport in the future [3]. Scanning probes can also be used to pattern surfaces, such as through spatially-localized Suzuki and Heck reactions in chemical scanning probe lithography. Mechanistic aspects of spatially confined Suzuki and Heck chemistry are also reported in this issue by researchers in Oxford [4]. All these developments in molecular electronics fabrication and characterization provide alternative

  18. Full-scale testing, production and cost analysis data for the advanced composite stabilizer for Boeing 737 aircraft, volume 2

    NASA Technical Reports Server (NTRS)

    Aniversario, R. B.; Harvey, S. T.; Mccarty, J. E.; Parson, J. T.; Peterson, D. C.; Pritchett, L. D.; Wilson, D. R.; Wogulis, E. R.

    1982-01-01

    The development, testing, production activities, and associated costs that were required to produce five-and-one-half advanced-composite stabilizer shipsets for Boeing 737 aircraft are defined and discussed.

  19. 77 FR 55768 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-11

    .... We will post all comments we receive, without change, to http://www.regulations.gov , including any personal information you provide. We will also post a report summarizing each substantive verbal contact we... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3)...

  20. 77 FR 45518 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-01

    ... cracks in Stringer 11, and a splice repair if necessary; and repetitive post-repair inspections, and.... We will post all comments we receive, without change, to http://www.regulations.gov , including any personal information you provide. We will also post a report summarizing each substantive verbal contact...

  1. Plan, formulate, discuss and correlate a NASTRAN finite element vibrations model of the Boeing Model 360 helicopter airframe

    NASA Technical Reports Server (NTRS)

    Gabel, R.; Lang, P. F.; Smith, L. A.; Reed, D. A.

    1989-01-01

    Boeing Helicopter, together with other United States helicopter manufacturers, participated in a finite element applications program to emplace in the United States a superior capability to utilize finite element analysis models in support of helicopter airframe design. The activities relating to planning and creating a finite element vibrations model of the Boeing Model 36-0 composite airframe are summarized, along with the subsequent analytical correlation with ground shake test data.

  2. Simultaneous cabin and ambient ozone measurements on two Boeing 747 airplanes. Volume 3: October 1978 - July 1979

    NASA Technical Reports Server (NTRS)

    Holdeman, J. D.; Jasperson, W. H.

    1985-01-01

    Measurements of ozone concentrations at cruise altitudes both outside and in the cabin of a Boeing 747SP and Boeing 747-100 airliners in routine commercial service are presented. Plotted and tabulated data are identified by route and are arranged chronologically for each airplane. These data were taken at 5- or 10-min intervals by automated instruments used in the NASA Global Atmospheric Sampling Program (GASP). All GASP cabin ozone data obtained from October 1978 to early July 1979 are presented.

  3. Agricultural Education: Value Adding.

    ERIC Educational Resources Information Center

    Riesenberg, Lou E.; And Others

    1989-01-01

    This issue develops the theme of "Agricultural Education--Value Adding." The concept value adding has been a staple in the world of agricultural business for describing adding value to a commodity that would profit the producer and the local community. Agricultural education should add value to individuals and society to justify agricultural…

  4. Allergic Contact Dermatitis

    PubMed Central

    Nelson, Jenny L.

    2010-01-01

    Epicutaneous patch testing is the gold standard method for the diagnosis of allergic contact dermatitis. Despite this knowledge, many clinical dermatologists do not offer patch testing in their offices or offer testing with only a limited number of allergens. Introduced in 1995, the Thin-Layer Rapid Use Epicutaneous Test originally contained 23 allergens and one control. In 2007, five additional allergens were added. This United States Food and Drug Administration-approved patch testing system made patch testing more convenient, and after its introduction, more dermatologists offered patch testing services. However, the number of allergens in the Thin-Layer Rapid Use Epicutaneous Test remains relatively low. Every two years, the North American Contact Dermatitis Group collects and reports the data from patch testing among its members to a standardized series of allergens. In 2005-2006, the Group used a series of 65 allergens. Of the top 30 allergens reported in 2005-2006, 10 were not included in the Thin-Layer Rapid Use Epicutaneous Test. Knowledge of and testing for additional allergens such as these may increase patch testing yield. PMID:20967194

  5. 77 FR 36139 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ... NPRM (76 FR 72858, November 28, 2011). SAS stated that it has previously accomplished the inspections... the AD as of September 9, 2009 (74 FR 38901, August 5, 2009). The Director of the Federal Register... (70 FR 56361, September 27, 2005). The Director of the Federal Register approved the incorporation...

  6. 78 FR 68693 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-15

    ..., 2012 (77 FR 26993). The NPRM proposed to require replacing titanium seat track bolts with CRES bolts... developing this AD. The following presents the comments received on the proposal (77 FR 26993, May 8, 2012... Compliance section of the NPRM (77 FR 26993, May 8, 2012). American explained that, since it alone...

  7. 78 FR 23465 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-19

    ... (77 FR 57541). That NPRM proposed to require repetitive inspections for cracking of the fuselage skin... (77 FR 57541, September 18, 2012) and the FAA's response to each comment. Request To Revise Federal... proposed AD (77 FR 57541, September 18, 2012). We agree that the specified references are incorrect....

  8. 78 FR 28729 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-16

    ..., 2012) Nord Wind Airlines reported the status of compliance of its airplanes with the NPRM (77 FR 65506... Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are... series airplanes. That AD currently requires modifying the nacelle strut and wing structure,...

  9. 77 FR 10411 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-22

    ... the affected skin panels. This proposed AD would require repetitive external phased-array ultrasonic inspections to detect cracks of the affected fuselage skin lap splices in Sections 41, 43, and 44, as...., Washington, DC 20590. Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday...

  10. 78 FR 14934 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-08

    ... 39 to supersede airworthiness directive (AD) 2000-11- 06, Amendment 39-11754 (65 FR 34928, June 1, 2000; corrected August 1, 2000 (65 FR 46862)). That first SNPRM would apply to certain Model 767- 200..., 2012 (77 FR 39188). The first SNPRM proposed to continue to require repetitive inspections to...

  11. 77 FR 2669 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-19

    ... steps away from the lap joints over the entire crown area, and vertical chem-mill cracks adjacent to the butt joints. This proposed AD would add repetitive inspections for cracking using different inspection... detect and correct fatigue cracking of the fuselage skin, which could cause the fuselage skin to...

  12. 77 FR 24357 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-24

    ... apply to the specified products. That NPRM published in the Federal Register on November 4, 2011 (76 FR... developing this AD. The following presents the comments received on the proposal (76 FR 68366, November 4, 2011) and the FAA's response to each comment. Support for the NPRM (76 FR 68366, November 4, 2011)...

  13. 78 FR 6251 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-30

    ... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation... airplanes. This proposed AD was prompted by reports of cracks and heat damage on pivot joint components... and correct heat damage and cracks in the pivot pin, truck beam lugs, and inner cylinder lugs,...

  14. 76 FR 77157 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-12

    ... accomplished. There are two separate causes of the thermal degradation. The first cause is the IP8 exhaust... considering further rulemaking to address this cause. ] This thermal degradation, if not corrected, could... 800 engines. This proposed AD was prompted by reports of events related to thermal damage of...

  15. 78 FR 73457 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-06

    ... issued AD 84-19-01, the upper deck tension ties have been identified as structure that is susceptible to... data that support the established structural maintenance program. For certain airplanes, this proposed... Commercial Airplanes, Attention: Data & Services Management, P.O. Box 3707, MC 2H-65, Seattle, WA...

  16. 77 FR 57990 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-19

    ... AD 99-08-23, Amendment 39-11132 (64 FR 19879, April 23, 1999)): Inspect within 375 flight cycles or..., Amendment 39-11132 (64 FR 19879, April 23, 1999). Within 1,200 flight cycles after performing the initial... as of May 10, 1999 (64 FR 19879, April 23, 1999). ADDRESSES: For service information identified...

  17. 78 FR 14469 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-06

    ... in depressurization of the airplane in flight. Actions Since Existing AD (75 FR 61337, October 5... inspections to find cracking of the web, strap, inner chords, inner chord angle of the forward edge frame of... the adjacent body structure and could result in depressurization of the airplane in flight. DATES:...

  18. 77 FR 70357 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-26

    ...-24, Amendment 39-15478 (73 FR 21242, April 21, 2008). That AD applies to the specified products. The NPRM published in the Federal Register on June 12, 2012 (77 FR 34879). That NPRM proposed to require.... The following presents the comments received on the proposal (77 FR 34879, June 12, 2012) and the...

  19. 76 FR 77367 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-13

    ... (76 FR 38332). That NPRM proposed to require replacing the anodized rub strips of the tail fuel tank access door with new alodined rub strips. Revisions to AD Language In the NPRM (76 FR 38332, June 30... 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR...

  20. 76 FR 77371 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-13

    ... rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2008-09-07, Amendment 39-15488 (73 FR 21811, April... on April 20, 2011 (76 FR 22059). That NPRM proposed to require installing new EICAS OPS (Version 7..., International, support the intent and contents of the NPRM (76 FR 22059, April 20, 2011). Request To...

  1. 78 FR 70214 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-25

    ...-02, Amendment 39-15838 (74 FR 11013, March 16, 2009). AD 2009-06-02 applied to the specified products. The NPRM published in the Federal Register on June 3, 2013 (78 FR 33012). The NPRM proposed to... presents the comments received on the proposal (78 FR 33012, June 3, 2013) and the FAA's response to...

  2. 78 FR 25377 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-01

    ... the Federal Register on March 16, 2012 (77 FR 15638). The original NPRM (74 FR 15683, April 7, 2009... in developing this AD. The following presents the comments received on the supplemental NPRM (77 FR... content of the SNPRM (77 FR 15638, March 16, 2012). Request for Compliance Time Extension United...

  3. 77 FR 47330 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-08

    ...-22-13, Amendment 39-16066 (74 FR 55755, October 29, 2009). That AD applies to the specified products. The NPRM published in the Federal Register on March 14, 2011 (76 FR 13534). That NPRM would have... airplane. Actions Since NPRM (76 FR 13534, March 14, 2011) Was Issued Since we issued the NPRM (76 FR...

  4. 78 FR 22178 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-15

    ... pose an ignition source or cause an inlet valve to jam. This final rule adds a step to identify and... source, which could result in an oxygen-fed fire; or an inlet valve jam in a crew oxygen mask stowage box unit, which could result in restricted flow of oxygen. DATES: This AD is effective May 20, 2013....

  5. 77 FR 39188 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-02

    ... Engineer, Propulsion Branch, ANM-140S, FAA, Seattle Aircraft Certification Office, 1601 Lind Avenue SW... part 39 to supersede AD 2000-11- 06, Amendment 39-11754 (65 FR 34928, June 1, 2000; corrected August 1, 2000 (65 FR 46862)), that would apply to all Model 767-200, -300, - 300F, and -400ER series...

  6. 77 FR 57536 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-18

    ... current (MFEC), magneto optic imager (MOI), C- scan, or ultrasonic phased array (UTPA) inspections) of the... ultrasonic phased array (UTPA) inspection) for cracking in the fuselage skin along the chem-mill steps at... chem-mill areas on the crown skin panels. This proposed AD would require repetitive inspections...

  7. 77 FR 42962 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-23

    ... chemical milling process. This AD requires repetitive external phased-array ultrasonic inspections to... Register on February 22, 2012 (77 FR 10411). That NPRM proposed to require repetitive external phased-array ultrasonic inspections to detect cracks of the affected fuselage skin lap splices in Sections 41, 43, and...

  8. 77 FR 57541 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-18

    ...), magneto optic imager (MOI), C-scan, or ultrasonic phased array (UTPA) inspections) of the fuselage skin at...), magneto optic imager (MOI), C-scan, or ultrasonic phased array (UTPA) inspection) for cracking in the... areas on the crown skin panels. This proposed AD would require repetitive inspections for cracking...

  9. 78 FR 63431 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-24

    ... FR 52899, September 6, 2005) (``AD 2005-18-08''), affects certain Model 737-100, -200, -200C, and... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... grow and result in a fuel leak and possible fire. DATES: We must receive comments on this proposed...

  10. 77 FR 43547 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-25

    .... This proposed AD would require repetitive detailed and high frequency eddy current inspections for... service information describes procedures for repetitive detailed and high frequency eddy current (HFEC... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate...

  11. 77 FR 54798 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-06

    ... operators to use the AMM, the NPRM (76 FR 62667, October 11, 2011) would put the UPS mechanics in an... Register on October 11, 2011 (76 FR 62667). That NPRM proposed to require modifying the floor panels... developing this AD. The following presents the comment received on the proposal (76 FR 62667, October...

  12. 78 FR 8999 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-07

    ... 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034...-400 series airplanes. This proposed AD was prompted by reports of auxiliary power unit (APU) faults... the APU power feeder cables; replacing the clamps and installing grommets; and related...

  13. 78 FR 59798 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-30

    ... between the wire bundling and hydraulic tubing. We disagree with United's request because the NPRM (77 FR... September 20, 2012 (77 FR 58334). The NPRM proposed to require an inspection for damage of wire bundles and... developing this AD. The following presents the comments received on the proposal (77 FR 58334, September...

  14. 77 FR 18137 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-27

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will...), latch pin migration, and broken latch pin fittings. This proposed AD would require various repetitive... cargo door latch mechanism and/or the lower sill structure. The migration of two or more latch pins...

  15. 77 FR 36143 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ... prompted by reports of cracks found on the center section ribs of the horizontal stabilizers. This AD...; phone: 206-544-5000, extension 2; fax: 206-766-5683; Internet: https://www.myboeingfleet.com . You may... received, and other information. The address for the Docket Office (phone: 800-647-5527) is...

  16. 78 FR 66859 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-07

    ... proposed AD affects 45 airplanes of U.S. registry. We estimate the following costs to comply with this... reducing the cost impact on affected individuals. We do not control warranty coverage for affected... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3)...

  17. 77 FR 12506 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-01

    ... Review, Flammability Reduction and Maintenance and Inspection Requirements'' (66 FR 23086, May 7, 2001..., Amendment 39-11018 (64 FR 4959, February 2, 1999), and AD 98-20-40, Amendment 39-10808 (63 FR 52147... the ``Reduction of Fuel Tank Flammability in Transport Category Airplanes'' rule (73 FR 42444, July...

  18. 78 FR 43766 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-22

    ... FR 15658). The NPRM proposed to require repetitive inspections of the wing center box for cracking... by reports of spanwise cracks and corrosion in the wing center box upper skin and rear spar upper.... This AD requires repetitive inspections of the wing center box for cracking around certain...

  19. 77 FR 69739 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-21

    ... the specified products. That NPRM published in the Federal Register on June 12, 2012 (77 FR 34881... this AD. The following presents the comments received on the proposal (77 FR 34881, June 12, 2012), and the FAA's response to each comment. Support for the NPRM (77 FR 34881, June 12, 2012) Mr. Caleb...

  20. 77 FR 65613 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-30

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... rudder power control unit (PCU) to identify the condition of its related reaction link assembly, and replacing the rudder PCU and its related reaction link assembly if necessary. This AD was prompted by...

  1. 78 FR 25374 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-01

    ... specified products. That NPRM published in the Federal Register on October 16, 2012 (77 FR 63266). That NPRM... participate in developing this AD. The following presents the comments received on the proposal (77 FR 63266... paragraph, and paragraph (e), ``Unsafe Condition,'' of the NPRM (77 FR 63266, October 16, 2012) be...

  2. 78 FR 26286 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-06

    ... comments on this supplemental NPRM by June 20, 2013. ADDRESSES: You may send comments, using the procedures...; fax 206-766-5683; Internet https://www.myboeingfleet.com . You may review copies of the referenced... information on the availability of this material at the FAA, call 425-227-1221. Examining the AD Docket...

  3. 78 FR 4055 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-18

    ... (77 FR 58325). That NPRM proposed to require installing a new relay and doing certain wiring changes... participate in developing this AD. The following presents the comments received on the proposal (77 FR 58325... intent that was proposed in the NPRM (77 FR 58325, September 20, 2012) for correcting the...

  4. 78 FR 72564 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-03

    ... (77 FR 75402). The NPRM proposed to require doing wiring changes and installing a ] new air/ground... developing this AD. The following presents the comments received on the proposal (77 FR 75402, December 20, 2012) and the FAA's response to each comment. Support for the NPRM (77 FR 75402, December 20, 2012)...

  5. 78 FR 22435 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-16

    ..., environmental, and energy aspects of this proposed AD. We will consider all comments received by the closing... the action of repeated stresses. This can happen because of normal operational conditions and design... structure with similar structural details and stress levels. Multiple-site damage is global damage...

  6. 78 FR 55662 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-11

    ... regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments... cracks grow under the action of repeated stresses. This can happen because of normal operational... large areas of structure with similar structural details and stress levels. Multiple-site damage...

  7. 78 FR 25905 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-03

    ... regulatory, economic, environmental, and energy aspects of this proposed AD. We will consider all comments... cracks grow under the action of repeated stresses. This can happen because of normal operational... large areas of structure with similar structural details and stress levels. Multiple-site damage...

  8. 77 FR 36206 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... proposing this AD to prevent contactor failures, which could result in uncontained hot debris flow due to ELMS contactor breakdown, consequent smoke and heat damage to airplane structure and equipment...

  9. 77 FR 32889 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-04

    ... the proposed rule (76 FR 77937, December 15, 2011). Request To Clarify Fuse Pin Replacement American... specified products. That NPRM published in the Federal Register on December 15, 2011 (76 FR 77937). That... participate in developing this AD. The following presents the comments received on the proposal (76 FR...

  10. 78 FR 17294 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-21

    ... specified products. That NPRM published in the Federal Register on June 18, 2012 (77 FR 36206). That NPRM... participate in developing this AD. The following presents the comments received on the proposal (77 FR 36206... paragraph (g) of the NPRM (77 FR 36206, June 18, 2012) to include prior revisions of the specified...

  11. 77 FR 11789 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-28

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska...-icing system for the angle of attack sensor, the total air temperature, and the pitot probes. We are proposing this AD to prevent ice from forming on air data system sensors and consequent loss of...

  12. 77 FR 73282 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-10

    ... published in the Federal Register on February 28, 2012 (77 FR 11789). That NPRM proposed to require... probes. Actions Since Issuance of NPRM (77 FR 11789, February 28, 2012) Since we issued the NPRM (77 FR... this AD. The following presents the comments received on the proposal (77 FR 11789, February 28,...

  13. 77 FR 5195 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-02

    ... ``original NPRM'') to supersede AD 2007-23-18, amendment 39-15266 (72 FR 65655, November 23, 2007). The... the Federal Register on July 13, 2009 (74 FR 33377). The ] original NPRM proposed to supersede an... Previous NPRM was Issued Since we issued the original NPRM (74 FR 33377, July 13, 2009), we have...

  14. 78 FR 49379 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-14

    ... access door was located where an impact-resistant access door was required, and stencils were missing from some impact-resistant access doors. This proposed AD would require an inspection of the left- and right-hand wing fuel tank access doors to determine that impact- resistant access doors are installed...

  15. 77 FR 34881 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-12

    ..., DC 20590. Hand Delivery: Deliver to Mail address above between 9 a.m. and 5 p.m., Monday through... between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket contains this..., Amendment 39-16022 (74 FR 48138, September 22, 2009), would terminate the requirements of the...

  16. 76 FR 58722 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-22

    ...-8946 (59 FR 32879, June 27, 1994). (ii) The inspection requirements of this AD are AMOCs for the post... or tension tie and frame structure at certain stations; and a post-modification inspection of the modified area and post-modification repetitive inspections of the unmodified area, and repair if...

  17. 78 FR 18922 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-28

    ... because of those comments. We will post all comments we receive, without change, to http://www.regulations.gov , including any personal information you provide. We will also post a report summarizing each.... Other Relevant Rulemaking On October 7, 1991, the FAA issued AD 91-22-04, Amendment 39-8064 (56 FR...

  18. 76 FR 81890 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-29

    ... AD 2004-09-32, AMENDMENT 39-13622 (69 FR 25481, MAY 7, 2004), WITH NEW TERMINATING ACTION (g) Initial... repetitive inspections of the fuselage skin and bear strap at the forward, upper corner of the L1 entry door... fuselage skin and bear strap at the forward, upper corner of the L1 entry door cutout, which could...

  19. 78 FR 18917 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-28

    ... (MED) 5 cutout. This proposed AD would require inspecting for the presence of repairs and measuring the... MED 5 cutout, which could result in in-flight depressurization. DATES: We must receive comments on... at the aft upper corner of the right MED 5 cutout on an airplane with 11,047 total flight cycles....

  20. 78 FR 3365 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-16

    ... proposed AD was prompted by a report that the seat track attachment of body station 520 flexible joint is... detachment in an emergency landing, which could cause injury to occupants of the passenger compartment and... joint is structurally deficient in resisting a 9g forward emergency load condition in certain...

  1. 78 FR 72558 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-03

    ... seat track attachment of body station 520 flexible joint is structurally deficient in resisting a 9g.... We are issuing this AD to prevent seat detachment in an emergency landing, which could cause injury... products. The NPRM published in the Federal Register on January 16, 2013 (78 FR 3365). The NPRM proposed...

  2. 78 FR 73460 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-06

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... driven pump (ADP) turbine gearbox assembly (TGA), which resulted in the release of high energy fragments. This proposed AD would require replacing the existing ADP TGA with an improved ADP TGA. We...

  3. 78 FR 25662 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-02

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... and right side chords of the fin closure rib for cracking and corrosion, and related investigative and corrective actions if necessary. We are proposing this AD to detect and correct cracking and corrosion in...

  4. 78 FR 23468 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-19

    ...). Request To Amend Installed Part Number (P/N) Air New Zealand requested that we revise the NPRM (77 FR... development of a modification that was approved as an optional terminating action to the existing AD's required repetitive inspections. We have been advised that the modification procedures include...

  5. 78 FR 6202 - Airworthiness Directives; the Boeing Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-30

    ... publications listed in the AD as of November 7, 2012 (77 FR 60296, October 3, 2012). ADDRESSES: For service... the Federal Register on August 27, 2012 (77 FR 51724). The original NPRM (76 FR 16579, March 24, 2011... on the proposal (77 FR 51724, August 27, 2012) and the FAA's response to each comment. Request...

  6. 77 FR 25647 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-01

    ... pitching motion during normal airplane operations. Heat damage or cracking in the MLG center axle and shock... Model 777 airplanes. This proposed AD was prompted by heat damage and cracks at the pivot joint location... cracking in the MLG center axle and shock strut inner cylinder lugs (pivot joint), which could result...

  7. 78 FR 27001 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-09

    ... as of May 17, 2002 (67 FR 17917, April 12, 2002). ADDRESSES: For service information identified in... proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2003-08-15, Amendment 39-13128 (68 FR... Register on November 7, 2012 (77 FR 66757). That NPRM proposed to require repetitive external eddy...

  8. 78 FR 48835 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-12

    ... requires repetitive detailed inspections for cracking of the aft tension tie channels from body station (BS... detailed inspection, add repetitive surface high-frequency eddy current inspections, and mandate the previously optional terminating action. We are proposing this AD to prevent fatigue cracking of the...

  9. 78 FR 65166 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-31

    ...: Do detailed and surface high frequency eddy current (HFEC) inspections for cracks in the tension ties... deck tension ties, repair or modification of any cracked tension ties, and repetitive inspections of repaired and modified tension ties and repair or modification if necessary. AD 94-13-06 also provided...

  10. 77 FR 60889 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-05

    ... specified products. That NPRM published in the Federal Register on June 4, 2012 (77 FR 32918). That NPRM... in developing this AD. The following presents the comment received on the proposal (77 FR 32918, June... aluminum from paragraph (h)(2) of the NPRM (77 FR 32918, June 4, 2012) to paragraph (j) of the NPRM....

  11. 77 FR 64704 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-23

    ... fuel feed system, followed by loss of fuel system suction feed capability on one engine, and in-flight.... We are issuing this AD to detect and correct loss of the engine fuel suction feed capability of the fuel system, which, in the event of total loss of the fuel boost pumps, could result in dual...

  12. 78 FR 52838 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-27

    ... of the engine fuel suction feed of the fuel system, and other related testing and corrective action if necessary. We are issuing this AD to detect and correct loss of the engine fuel suction feed... to require repetitive operational tests of the engine fuel suction feed of the fuel system, and...

  13. 78 FR 28128 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-14

    ... of the engine fuel suction feed of the fuel system, and corrective actions if necessary. We are issuing this AD to detect and correct loss of the engine fuel suction feed capability of the fuel system, which, in the event of total loss of the fuel boost pumps, could result in dual engine...

  14. 78 FR 52836 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-27

    ... fuel feed system, followed by loss of fuel system suction feed capability on one engine, and in-flight shutdown of the engine. This AD requires repetitive operational tests of the engine fuel suction feed of... loss of the engine fuel suction feed capability of the fuel system, which, in the event of total...

  15. 77 FR 28240 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-14

    ... FR 59590). That NPRM proposed to require repetitive inspections for cracking of the aft pressure... strap splices of the aft pressure bulkhead at station (STA) 1582 due to fatigue. This AD requires repetitive inspections for cracking of the aft pressure bulkhead at STA 1582, repair or replacement of...

  16. 77 FR 11416 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-27

    ... 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034.... This proposed AD would require modifying COS boxes by installing new brackets, stiffeners, and hardware..., stiffeners, and hardware (bolts, washers, and nuts) as needed. FAA's Determination We are proposing this...

  17. 78 FR 3363 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-16

    ... General Electric (GE) CF6-80C2 engines. This proposed AD was prompted by reports of failure of the electro... airplanes, certificated in any category, powered by General Electric (GE) CF6-80C2 engines, as identified in...-13269 (68 FR 51439, August 27, 2003), for Model 747-400 series airplanes equipped with GE Model...

  18. 78 FR 71989 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-02

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... of the barrel nuts and bolts, as applicable, on each forward engine mount, and related investigative and corrective actions if necessary. This AD was prompted by a report of cracked barrel nuts found...

  19. 78 FR 65171 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-31

    ... conversion. This AD requires doing a general visual inspection of the station 1920 splice clip for correct... the Federal Register on August 1, 2013 (78 FR 46540). The NPRM proposed to require doing a general visual inspection of the station 1920 splice clip for correct fastener installation, and...

  20. 78 FR 15281 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-11

    ... published in the Federal Register on September 11, 2012 (77 FR 55773). The original NPRM (76 FR 53346... AD. The following presents the comments received on the proposal (77 FR 55773, September 11, 2012... the proposed rule. Request To Revise Paragraphs (h)(1)(ii) and (j)(1)(ii) of SNPRM (77 FR...

  1. 77 FR 36222 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation... the inboard MLG door hinge fittings. This proposed AD would require repetitive inspections for cracking of the inboard MLG door hinge fittings; and modification of cracked fittings, which...

  2. 78 FR 58982 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-25

    ... invite comments on the overall regulatory, economic, environmental, and energy aspects of this proposed...-07-07, Amendment 39-17411 (78 FR 22182, April 15, 2013) (``AD 2013-07-07''), for all Model 737-600... to apply the wear and corrosion protection surface coating to attach pins of the...

  3. 76 FR 7513 - Airworthiness Directives; The Boeing Company Model 747-400 and -400F Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-10

    ... drip shields. This proposed AD was prompted by a report of a loss of bus control unit number 1 and..., which could result in the loss of flight critical systems. DATES: We must receive comments on this... FURTHER INFORMATION CONTACT: Marcia Smith, Aerospace Engineer, Cabin Safety & Environmental Systems...

  4. Terminal area operations with enhanced and synthetic vision: experience in the Boeing technology demonstrator

    NASA Astrophysics Data System (ADS)

    Tuttle, Timothy T.; Imrich, Thomas; Etherington, Timothy J.; Theunissen, Erik

    2003-09-01

    Several emerging technologies were recently demonstrated in a Boeing 737-900 as part of Boeing's Technology Demonstrator program. Among these technologies were two enhanced vision systems and a synthetic vision system, including synthetic displays to support surface operations. This project gained operational experience with enhanced and synthetic vision systems operating in a context that included Required Navigation Performance (RNP) terminal area operations, Global Navigation Satellite System (GNSS) approach and landing, and Integrated Area Navigation (IAN). The technologies were demonstrated to a broad mix of constituents involved in research, regulation, and acquisition in the transport category environment. This paper describes the systems demonstrated, the context in which they were used, and perceived benefits of integrating them in an operational environment. Lessons learned in the implementation of these technologies throughout the program are described and subjective data from participants are summarized.

  5. Data Mining of NASA Boeing 737 Flight Data: Frequency Analysis of In-Flight Recorded Data

    NASA Technical Reports Server (NTRS)

    Butterfield, Ansel J.

    2001-01-01

    Data recorded during flights of the NASA Trailblazer Boeing 737 have been analyzed to ascertain the presence of aircraft structural responses from various excitations such as the engine, aerodynamic effects, wind gusts, and control system operations. The NASA Trailblazer Boeing 737 was chosen as a focus of the study because of a large quantity of its flight data records. The goal of this study was to determine if any aircraft structural characteristics could be identified from flight data collected for measuring non-structural phenomena. A number of such data were examined for spatial and frequency correlation as a means of discovering hidden knowledge of the dynamic behavior of the aircraft. Data recorded from on-board dynamic sensors over a range of flight conditions showed consistently appearing frequencies. Those frequencies were attributed to aircraft structural vibrations.

  6. Advanced composite elevator for Boeing 727 aircraft. Volume 1: Technical summary

    NASA Technical Reports Server (NTRS)

    Chovil, D. V.; Harvey, S. T.; Mccarty, J. E.; Desper, O. E.; Jamison, E. S.; Syder, H.

    1981-01-01

    The design, development, analysis, and testing activities and results that were required to produce five and one-half shipsets of advanced composite elevators for Boeing 727 aircraft are summarized. During the preliminary design period, alternative concepts were developed. After selection of the best design, detail design and basic configuration improvements were evaluated. Five and one-half shipsets were manufactured. All program goals (except competitive cost demonstration) were accomplished when our design met or exceeded all requirements, criteria, and objectives.

  7. Using binary optical elements (BOEs) to generate rectangular spots for illumination in micro flow cytometer

    PubMed Central

    Zhao, Jingjing; You, Zheng

    2016-01-01

    This work introduces three rectangular quasi-flat-top spots, which are provided by binary optical elements (BOEs) and utilized for the illumination in a microflow cytometer. The three spots contain, respectively, one, two, and three rectangles (R1, R2, and R3). To test the performance of this mechanism, a microflow cytometer is established by integrating the BOEs and a three-dimensional hydrodynamic focusing chip. Through the experiments of detecting fluorescence microbeads, the three spots present good fluorescence coefficients of variation in comparison with those derived from commercial instruments. Benefiting from a high spatial resolution, when using R1 spot, the micro flow cytometer can perform a throughput as high as 20 000 events per second (eps). Illuminated by R2 or R3 spot, one bead emits fluorescence twice or thrice, thus the velocity can be measured in real time. Besides, the R3 spot provides a long-time exposure, which is conducive to improving fluorescence intensity and the measurement stability. In brief, using the spots shaped and homogenized by BOEs for illumination can increase the performance and the functionality of a micro flow cytometer. PMID:27733892

  8. Irritant Contact Dermatitis

    MedlinePlus

    ... and rashes clinical tools newsletter | contact Share | Irritant Contact Dermatitis Information for adults A A A This ... severe involvement in the patient's armpit. Overview Irritant contact dermatitis is an inflammatory rash caused by direct ...

  9. Contact Lens Risks

    MedlinePlus

    ... Health and Consumer Devices Consumer Products Contact Lenses Contact Lens Risks Share Tweet Linkedin Pin it More ... redness blurred vision swelling pain Serious Hazards of Contact Lenses Symptoms of eye irritation can indicate a ...

  10. Contact Lens Care

    MedlinePlus

    ... For Consumers Consumer Information by Audience For Women Contact Lens Care Share Tweet Linkedin Pin it More ... 1088, www.fda.gov/medwatch Learn More about Contact Lens Care Other Tips on Contact Lenses Decorative ...

  11. Contact Lens Solution Toxicity

    MedlinePlus

    ... rash and rashes clinical tools newsletter | contact Share | Contact Lens Solution Toxicity Information for adults A A A This image shows a reaction to contact lens solution. The prominent blood vessels and redness ...

  12. Adding flavor to AdS4/CFT3

    NASA Astrophysics Data System (ADS)

    Ammon, Martin; Erdmenger, Johanna; Meyer, René; O'Bannon, Andy; Wrase, Timm

    2009-11-01

    Aharony, Bergman, Jafferis, and Maldacena have proposed that the low-energy description of multiple M2-branes at a Bbb C4/Bbb Zk singularity is a (2+1)-dimensional Script N = 6 supersymmetric U(Nc) × U(Nc) Chern-Simons matter theory, the ABJM theory. In the large-Nc limit, its holographic dual is supergravity in AdS4 × S7/Bbb Zk. We study various ways to add fields that transform in the fundamental representation of the gauge groups, i.e. flavor fields, to the ABJM theory. We work in a probe limit and perform analyses in both the supergravity and field theory descriptions. In the supergravity description we find a large class of supersymmetric embeddings of probe flavor branes. In the field theory description, we present a general method to determine the couplings of the flavor fields to the fields of the ABJM theory. We then study four examples in detail: codimension-zero Script N = 3 supersymmetric flavor, described in supergravity by Kaluza-Klein monopoles or D6-branes; codimension-one Script N = (0,6) supersymmetric chiral flavor, described by D8-branes; codimension-one Script N = (3,3) supersymmetric non-chiral flavor, described by M5/D4-branes; codimension-two Script N = 4 supersymmetric flavor, described by M2/D2-branes. Finally we discuss special physical equivalences between brane embeddings in M-theory, and their interpretation in the field theory description.

  13. Twistor methods for AdS5

    NASA Astrophysics Data System (ADS)

    Adamo, Tim; Skinner, David; Williams, Jack

    2016-08-01

    We consider the application of twistor theory to five-dimensional anti-de Sitter space. The twistor space of AdS5 is the same as the ambitwistor space of the four-dimensional conformal boundary; the geometry of this correspondence is reviewed for both the bulk and boundary. A Penrose transform allows us to describe free bulk fields, with or without mass, in terms of data on twistor space. Explicit representatives for the bulk-to-boundary propagators of scalars and spinors are constructed, along with twistor action functionals for the free theories. Evaluating these twistor actions on bulk-to-boundary propagators is shown to produce the correct two-point functions.

  14. AdS3: the NHEK generation

    NASA Astrophysics Data System (ADS)

    Bena, Iosif; Heurtier, Lucien; Puhm, Andrea

    2016-05-01

    It was argued in [1] that the five-dimensional near-horizon extremal Kerr (NHEK) geometry can be embedded in String Theory as the infrared region of an infinite family of non-supersymmetric geometries that have D1, D5, momentum and KK monopole charges. We show that there exists a method to embed these geometries into asymptotically- {AdS}_3× {S}^3/{{Z}}_N solutions, and hence to obtain infinite families of flows whose infrared is NHEK. This indicates that the CFT dual to the NHEK geometry is the IR fixed point of a Renormalization Group flow from a known local UV CFT and opens the door to its explicit construction.

  15. Shadows, currents, and AdS fields

    SciTech Connect

    Metsaev, R. R.

    2008-11-15

    Conformal totally symmetric arbitrary spin currents and shadow fields in flat space-time of dimension greater than or equal to four are studied. A gauge invariant formulation for such currents and shadow fields is developed. Gauge symmetries are realized by involving the Stueckelberg fields. A realization of global conformal boost symmetries is obtained. Gauge invariant differential constraints for currents and shadow fields are obtained. AdS/CFT correspondence for currents and shadow fields and the respective normalizable and non-normalizable solutions of massless totally symmetric arbitrary spin AdS fields are studied. The bulk fields are considered in a modified de Donder gauge that leads to decoupled equations of motion. We demonstrate that leftover on shell gauge symmetries of bulk fields correspond to gauge symmetries of boundary currents and shadow fields, while the modified de Donder gauge conditions for bulk fields correspond to differential constraints for boundary conformal currents and shadow fields. Breaking conformal symmetries, we find interrelations between the gauge invariant formulation of the currents and shadow fields, and the gauge invariant formulation of massive fields.

  16. Contact Dermatitis in Pediatrics.

    PubMed

    Pelletier, Janice L; Perez, Caroline; Jacob, Sharon E

    2016-08-01

    Contact dermatitis is an umbrella term that describes the skin's reaction to contacted noxious or allergenic substances. The two main categories of contact dermatitis are irritant type and allergic type. This review discusses the signs, symptoms, causes, and complications of contact dermatitis. It addresses the testing, treatment, and prevention of contact dermatitis. Proper management of contact dermatitis includes avoidance measures for susceptible children. Implementation of a nickel directive (regulating the use of nickel in jewelry and other products that come into contact with the skin) could further reduce exposure to the most common allergens in the pediatric population. [Pediatr Ann. 2016;45(8):e287-e292.]. PMID:27517356

  17. Formula Gives Better Contact-Resistance Values

    NASA Technical Reports Server (NTRS)

    Lieneweg, Udo; Hannaman, David J.

    1988-01-01

    Lateral currents in contact strips taken into account. Four-terminal test structures added to intergrated circuits to enable measurement of interfacial resistivities of contacts between thin conducting layers. Thin-film model simplified quasi-two-dimensional potential model that accounts adequately for complicated three-dimensional, nonuniform current densitites. Effects of nonuniformity caused by lateral current flow in strips summarized in equivalent resistance Rs and voltage Vs.

  18. ADS pilot program Plan

    NASA Technical Reports Server (NTRS)

    Clauson, J.; Heuser, J.

    1981-01-01

    The Applications Data Service (ADS) is a system based on an electronic data communications network which will permit scientists to share the data stored in data bases at universities and at government and private installations. It is designed to allow users to readily locate and access high quality, timely data from multiple sources. The ADS Pilot program objectives and the current plans for accomplishing those objectives are described.

  19. Contact dermatitis caused by preservatives.

    PubMed

    Yim, Elizabeth; Baquerizo Nole, Katherine L; Tosti, Antonella

    2014-01-01

    Preservatives are biocidal chemicals added to food, cosmetics, and industrial products to prevent the growth of microorganisms. They are usually nontoxic and inexpensive and have a long shelf life. Unfortunately, they commonly cause contact dermatitis. This article reviews the most important classes of preservatives physicians are most likely to encounter in their daily practice, specifically isothiazolinones, formaldehyde and formaldehyde-releasers, iodopropynyl butylcarbamate, methyldibromoglutaronitrile, and parabens. For each preservative mentioned, the prevalence of sensitization, clinical presentation of contact dermatitis, patch testing concentrations, cross reactions, and related legislation will be discussed. Mandatory labeling of preservatives is required in some countries, but not required in others. Until policies are made, physicians and patients must be proactive in identifying potential sensitizers and removing their use. We hope that this article will serve as a guide for policy makers in creating legislation and future regulations on the use and concentration of certain preservatives in cosmetics and industrial products.

  20. A study of the TCAS 2 collision avoidance system mounted on a Boeing 737 aircraft

    NASA Technical Reports Server (NTRS)

    Grandchamp, B.; Burnside, W. D.; Rojas, R. G.

    1987-01-01

    The purpose of this report is to determine the effects of scattering from major aircraft structures on the TCAS 2 collision avoidance system mounted on a Boeing 737. It is found that the major source of scattering for angles of observation above the horizon is the vertical stabilizer and that its effect may be greatly reduced by mounting the TCAS 2 array close to the nose of the aircraft. In addition, by mounting the array close to the nose, the effects of fuselage blockage on the array patterns at elevation angles below the horizon may be greatly reduced in the forward direction.

  1. STS-57 inflight maintenance (IFM) tool tray at Boeing FEPF bench review

    NASA Technical Reports Server (NTRS)

    1993-01-01

    STS-57 inflight maintenance (IFM) tool tray is displayed on a table top during the bench review at Boeing's Flight Equipment Processing Facility (FEPF) located near JSC. The tool tray will be located on Endeavour's, Orbiter Vehicle (OV) 105's, middeck in forward locker MF57K and includes modified forceps, L-shaped hex wrenches, jeweler screwdrivers, adjustable wrench, bone saw, combination wrenches, override devices, switch guards, tape measure, torque driver, short screwdriver, long screwdriver, phillips screwdrivers, ratchet wrench, needlenose pliers, torque tips, adapter, universal joint, deepwell sockets, sockets, driver handle, seat adjustment tool, extensions, torque wrench, allen head drivers, hacksaw, and blades. Photo taken by NASA JSC contract photographer Benny Benavides.

  2. INEX modeling of the Boeing ring optical resonator free-electron laser

    SciTech Connect

    Goldstein, J.C.; Tokar, R.L.; McVey, B.D.; Elliott, C.J. ); Dowell, D.H.; Laucks, M.L.; Lowrey, A.R. )

    1990-01-01

    We present new results from the integrated numerical model of the accelerator/beam transport system and ring optical resonator of the Boeing free-electron laser experiment. Modifications of the electron-beam transport have been included in a previously developed PARMELA model and are shown to reduce dramatically emittance growth in the 180{degree} bend. The new numerically generated electron beam is used in the 3-D FEL simulation code FELEX to calculate expected laser characteristics with the ring optical resonator and the 5-m untapered THUNDER wiggler. Gain, extraction efficiency, and optical power are compared with experimental data. Performance sensitivity to optical cavity misalignments is studied.

  3. Contact reactions to food.

    PubMed

    Killig, Claudia; Werfel, Thomas

    2008-05-01

    Cutaneous adverse reactions to foods, spices, and food additives can occur both in occupational and nonoccupational settings in those who grow, handle, prepare, or cook food. Because spices are also utilized in cosmetics and perfumes, other exposures are encountered that can result in adverse cutaneous reactions. This article describes the reaction patterns that can occur upon contact with foods, including irritant contact dermatitis and allergic contact dermatitis. The ingestion of culprit foods by sensitized individuals can provoke a generalized eczematous rash, referred to as systemic contact dermatitis. Other contact reactions to food include contact urticaria and protein contact dermatitis provoked by high-molecular-weight food proteins often encountered in patients with atopic dermatitis. Phototoxic and photoallergic contact dermatitis are also considered.

  4. Allergic Contact Dermatitis

    MedlinePlus

    ... causes of allergic contact dermatitis include nickel, chromates, rubber chemicals, and topical antibiotic ointments and creams. Frequent ... construction workers who are in contact with cement. Rubber chemicals are found in gloves, balloons, elastic in ...

  5. Colored Contact Lens Dangers

    MedlinePlus

    ... Halloween Hazard: The Hidden Dangers of Buying Decorative Contact Lenses Without a Prescription Sep. 26, 2013 It ... the truth." Real People, Real Problems with Colored Contact Lenses Julian: Teenager Blinded In One Eye By ...

  6. Contact solution algorithms

    NASA Technical Reports Server (NTRS)

    Tielking, John T.

    1989-01-01

    Two algorithms for obtaining static contact solutions are described in this presentation. Although they were derived for contact problems involving specific structures (a tire and a solid rubber cylinder), they are sufficiently general to be applied to other shell-of-revolution and solid-body contact problems. The shell-of-revolution contact algorithm is a method of obtaining a point load influence coefficient matrix for the portion of shell surface that is expected to carry a contact load. If the shell is sufficiently linear with respect to contact loading, a single influence coefficient matrix can be used to obtain a good approximation of the contact pressure distribution. Otherwise, the matrix will be updated to reflect nonlinear load-deflection behavior. The solid-body contact algorithm utilizes a Lagrange multiplier to include the contact constraint in a potential energy functional. The solution is found by applying the principle of minimum potential energy. The Lagrange multiplier is identified as the contact load resultant for a specific deflection. At present, only frictionless contact solutions have been obtained with these algorithms. A sliding tread element has been developed to calculate friction shear force in the contact region of the rolling shell-of-revolution tire model.

  7. Glasses and Contact Lenses

    MedlinePlus

    ... Here's Help White House Lunch Recipes Glasses and Contact Lenses KidsHealth > For Kids > Glasses and Contact Lenses Print A A A Text Size What's ... together the way they should. But eyeglasses or contact lenses, also called corrective lenses, can help most ...

  8. CONTACT URTICARIA: PRESENT SCENARIO

    PubMed Central

    Bhatia, Ruchi; Alikhan, Ali; Maibach, Howard I

    2009-01-01

    Immunological contact urticaria is a hypersensitivity reaction that appears on the skin following contact with an eliciting substance. Recent advances in our understanding of the molecular mechanism and pathogenesis of this reaction have altered its classification, diagnosis, and treatment. We discuss classification, epidemiology, diagnosis, testing, and treatment options that are available to patients with contact urticaria. PMID:20161861

  9. Flight test evaluation of drag effects on surface coatings on the NASA Boeing 737 TCV airplane

    NASA Technical Reports Server (NTRS)

    George-Falvy, D.; Sikavi, D. A.

    1981-01-01

    A flight test program was conducted in which the effects of various surface coatings on aerodynamic drag were investigated; results of this program are described in this report. The tests were conducted at NASA-Langley Research Center on the terminal configured vehicle (TCV) Boeing 737 research airplane. The Boeing Company, as contractor with NASA under the Energy Efficient Transport (EET) program, planned and evaluated the experiment. The NASA-TCV Program Office coordinated the experiment and performed the flight tests. The principal objective of the test was to evaluate the drag reduction potential of an elastomeric polyurethane surface coating, CAAPCO B-274, which also has been considered for application on transport airplanes to protect leading edges from erosion. The smooth surface achievable with this type of coating held some promise of reducing the skin friction drag as compared to conventional production type aircraft surfaces, which are usually anodized bare metal or coated with corrosion protective paint. Requirements for high precision measurements were the principal considerations in the experiment.

  10. Contact lens in keratoconus

    PubMed Central

    Rathi, Varsha M; Mandathara, Preeji S; Dumpati, Srikanth

    2013-01-01

    Contact lenses are required for the visual improvement in patients with keratoconus. Various contact lens options, such as rigid gas permeable (RGP) lenses, soft and soft toric lenses, piggy back contact lenses (PBCL), hybrid lenses and scleral lenses are availble. This article discusses about selection of a lens depending on the type of keratoconus and the fitting philosophies of various contact lenses including the starting trial lens. A Medline search was carried out for articles in the English language with the keywords keratoconus and various contact lenses such as Rose k lens, RGP lens, hybrid lens, scleral lens and PBCL. PMID:23925325

  11. What Value "Value Added"?

    ERIC Educational Resources Information Center

    Richards, Andrew

    2015-01-01

    Two quantitative measures of school performance are currently used, the average points score (APS) at Key Stage 2 and value-added (VA), which measures the rate of academic improvement between Key Stage 1 and 2. These figures are used by parents and the Office for Standards in Education to make judgements and comparisons. However, simple…

  12. Introducing ADS Labs

    NASA Astrophysics Data System (ADS)

    Accomazzi, Alberto; Henneken, E.; Grant, C. S.; Kurtz, M. J.; Di Milia, G.; Luker, J.; Thompson, D. M.; Bohlen, E.; Murray, S. S.

    2011-05-01

    ADS Labs is a platform that ADS is introducing in order to test and receive feedback from the community on new technologies and prototype services. Currently, ADS Labs features a new interface for abstract searches, faceted filtering of results, visualization of co-authorship networks, article-level recommendations, and a full-text search service. The streamlined abstract search interface provides a simple, one-box search with options for ranking results based on a paper relevancy, freshness, number of citations, and downloads. In addition, it provides advanced rankings based on collaborative filtering techniques. The faceted filtering interface allows users to narrow search results based on a particular property or set of properties ("facets"), allowing users to manage large lists and explore the relationship between them. For any set or sub-set of records, the co-authorship network can be visualized in an interactive way, offering a view of the distribution of contributors and their inter-relationships. This provides an immediate way to detect groups and collaborations involved in a particular research field. For a majority of papers in Astronomy, our new interface will provide a list of related articles of potential interest. The recommendations are based on a number of factors, including text similarity, citations, and co-readership information. The new full-text search interface allows users to find all instances of particular words or phrases in the body of the articles in our full-text archive. This includes all of the scanned literature in ADS as well as a select portion of the current astronomical literature, including ApJ, ApJS, AJ, MNRAS, PASP, A&A, and soon additional content from Springer journals. Fulltext search results include a list of the matching papers as well as a list of "snippets" of text highlighting the context in which the search terms were found. ADS Labs is available at http://adslabs.org

  13. Contact micromechanics in granular media with clay

    SciTech Connect

    Ita, S.L.

    1994-08-01

    Many granular materials, including sedimentary rocks and soils, contain clay particles in the pores, grain contacts, or matrix. The amount and location of the clays and fluids can influence the mechanical and hydraulic properties of the granular material. This research investigated the mechanical effects of clay at grain-to-grain contacts in the presence of different fluids. Laboratory seismic wave propagation tests were conducted at ultrasonic frequencies using spherical glass beads coated with Montmorillonite clay (SWy-1) onto which different fluids were adsorbed. For all bead samples, seismic velocity increased and attenuation decreased as the contact stiffnesses increased with increasing stress demonstrating that grain contacts control seismic transmission in poorly consolidated and unconsolidated granular material. Coating the beads with clay added stiffness and introduced viscosity to the mechanical contact properties that increased the velocity and attenuation of the propagating seismic wave. Clay-fluid interactions were studied by allowing the clay coating to absorb water, ethyl alcohol, and hexadecane. Increasing water amounts initially increased seismic attenuation due to clay swelling at the contacts. Attenuation decreased for higher water amounts where the clay exceeded the plastic limit and was forced from the contact areas into the surrounding open pore space during sample consolidation. This work investigates how clay located at grain contacts affects the micromechanical, particularly seismic, behavior of granular materials. The need for this work is shown by a review of the effects of clays on seismic wave propagation, laboratory measurements of attenuation in granular media, and proposed mechanisms for attenuation in granular media.

  14. 75 FR 74668 - Airworthiness Directives; The Boeing Company Model 777-200, -200LR, -300, and -300ER Series...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-01

    ..., Washington 98124-2207; telephone 206- 544-5000, extension 1, fax 206-766-5680; e-mail me.boecom@boeing.com... certify this proposed regulation: 1. Is not a ``significant regulatory action'' under Executive Order 12866, 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR...

  15. 75 FR 59167 - Airworthiness Directives; The Boeing Company Model 737-600, -700, -700C, -800, -900, and -900ER...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-27

    ... per engine........ 0 3,060 15 45,900 Service Bulletin 737 78 1063). Software update (CFM CFM56-7B 1 0..., installing updated full-authority digital electronic control software, and modifying the thrust reverser... updated full-authority digital electronic control (FADEC) software. Boeing Service Bulletin...

  16. 78 FR 76731 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Rechargeable Lithium...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-19

    ... battery systems special conditions adopted for the Boeing Model 787 (72 FR 57842; October 11, 2007..., -300, and -300ER series airplanes, was published in the Federal Register on August 22, 2013 (78 FR... Series Airplanes; Rechargeable Lithium Ion Batteries and Battery Systems AGENCY: Federal...

  17. 75 FR 2433 - Special Conditions: Boeing Model 747-8/-8F Airplanes, Systems and Data Networks Security...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-15

    ... systems and networks, which may allow access to external computer systems and networks. Connectivity to... Administration 14 CFR Part 25 Special Conditions: Boeing Model 747-8/-8F Airplanes, Systems and Data Networks Security--Protection of Airplane Systems and Data Networks From Unauthorized External Access...

  18. 75 FR 71346 - Special Conditions: Boeing Model 787-8 Airplane; Lightning Protection of Fuel Tank Structure To...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-23

    ..., 2009 (74 FR 52698). Several comments were received from two commenters (Cessna and NATCA). Cessna 1.... The Boeing Model 787-8 airplane will incorporate a fuel tank nitrogen generation system (NGS) that... Features The 787 will have a fuel tank NGS that is intended to control fuel tank flammability. This NGS...

  19. Assessment of risk to Boeing commerical transport aircraft from carbon fibers. [fiber release from graphite/epxoy materials

    NASA Technical Reports Server (NTRS)

    Clarke, C. A.; Brown, E. L.

    1980-01-01

    The possible effects of free carbon fibers on aircraft avionic equipment operation, removal costs, and safety were investigated. Possible carbon fiber flow paths, flow rates, and transfer functions into the Boeing 707, 727, 737, 747 aircraft and potentially vulnerable equipment were identified. Probabilities of equipment removal and probabilities of aircraft exposure to carbon fiber were derived.

  20. Low speed wind tunnel flow field results for JT8D refan engines on the Boeing 727-200

    NASA Technical Reports Server (NTRS)

    Easterbrook, W. G.; Roberts, W. H.

    1974-01-01

    Low speed flow angularity results are presented showing flow direction at the nacelle locations on the Boeing 727-200. Flow angle probes (yawheads) were used for measurements at side and center inlet positions on the aft fuselage. A range of flap settings were tested with flap angles of 0 deg, 15 deg, and 40 deg selected for investigation.

  1. 76 FR 13541 - Airworthiness Directives; The Boeing Company Model 757-200, -200CB, and -300 Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-14

    ...-11266 (64 FR 45436, August 20, 1999), which was based on Boeing Service Bulletin 757-25-0182, Revision 1... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... the bearings and lockbase retainer in the door latch assembly, relocating and adjusting of the...

  2. 76 FR 14794 - Special Conditions: Boeing Model 747-8 Airplanes, Systems and Data Networks Security-Isolation or...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-03-18

    ... Boeing Model 747-8 airplane was published in the Federal Register on December 9, 2010 (75 FR 76647). No... incorporate the following novel or unusual design features: Digital systems architecture composed of several connected networks. The network architecture would be used for a diverse set of functions, including:...

  3. Non-contact measurement of contact wire

    NASA Astrophysics Data System (ADS)

    Yi, Yaxing; Ye, Xuemei; Li, Zhongke; Yue, Kaiduan

    2008-12-01

    The overhead contact system is the power supply unit of the electric locomotive. This article is to introduce our newly developed method to measure the height and pull out value of the contact wire. A carema dolly which can move on railway is applied to bear the weight of the measure equipment; two linear CCD cameras are installed on the dolly symmetrically about the midline of two rails. While the dolly move along the railway, two CCD cameras grasp the image synchronously, and a computer real-time process the images, the height and pull out value can be calculate out from the images.

  4. [Contact dermatitis in Dakar].

    PubMed

    Niang, S O

    2007-01-01

    Because of the widespread repartition of allergens, allergic contact dermatitis is the most common inflammatory skin disease. It's the best model of dilated hypersensibility mediated by T lymphocytes cells. Atopic dermatitis and irritative dermatitis are to be distinguished to contact dermatitis. The aetiological diagnosis is the most important step of management of patients with that disease because it's the best way to avoid recurrences. The identification of cause is based on aetiological interrogatory and epicutaneous tests with 23 allergens completed with personnel products and specialised tests. Contact dermatitis can be classified according to results of aetiological management. In occupational contact dermatitis, contact dermatitis due to drugs, to metals, cosmetics, clothes and accessory and proteins. Management of patients with contact dermatitis is based on individual eviction, protection, cosmetovigilance, declaration of occupational dermatosis and allergovigilance. PMID:19102084

  5. Two Virasoro symmetries in stringy warped AdS3

    NASA Astrophysics Data System (ADS)

    Compère, Geoffrey; Guica, Monica; Rodriguez, Maria J.

    2014-12-01

    We study three-dimensional consistent truncations of type IIB supergravity which admit warped AdS3 solutions. These theories contain subsectors that have no bulk dynamics. We show that the symplectic form for these theories, when restricted to the non-dynamical subsectors, equals the symplectic form for pure Einstein gravity in AdS3. Consequently, for each consistent choice of boundary conditions in AdS3, we can define a consistent phase space in warped AdS3 with identical conserved charges. This way, we easily obtain a Virasoro × Virasoro asymptotic symmetry algebra in warped AdS3; two different types of Virasoro × Kač-Moody symmetries are also consistent alternatives.

  6. Optical contact micrometer

    SciTech Connect

    Jacobson, Steven D.

    2014-08-19

    Certain examples provide optical contact micrometers and methods of use. An example optical contact micrometer includes a pair of opposable lenses to receive an object and immobilize the object in a position. The example optical contact micrometer includes a pair of opposable mirrors positioned with respect to the pair of lenses to facilitate viewing of the object through the lenses. The example optical contact micrometer includes a microscope to facilitate viewing of the object through the lenses via the mirrors; and an interferometer to obtain one or more measurements of the object.

  7. Leading Change, Adding Value.

    PubMed

    Evans, Nick

    2016-09-12

    Essential facts Leading Change, Adding Value is NHS England's new nursing and midwifery framework. It is designed to build on Compassion in Practice (CiP), which was published 3 years ago and set out the 6Cs: compassion, care, commitment, courage, competence and communication. CiP established the values at the heart of nursing and midwifery, while the new framework sets out how staff can help transform the health and care sectors to meet the aims of the NHS England's Five Year Forward View. PMID:27615573

  8. STS-65 crewmembers and backup participate in bench review at Boeing Building

    NASA Technical Reports Server (NTRS)

    1994-01-01

    STS-65 crewmembers, wearing clean suits, look over equipment to be carried aboard the Space Shuttle Columbia, Orbiter Vehicle (OV) 102, for the scheduled July flight of the second International Microgravity Laboratory (IML-2) mission. Surrounding a table full of equipment at Boeing's Flight Equipment Processing Facility near the Johnson Space Center (JSC), are (left to right) Mission Specialist (MS) Leroy Chiao, MS Donald A. Thomas, Commander Robert D. Cabana, Payload Specialist Chiaki Mukai, Payload Commander (PLC) Richard J. Hieb, and backup (alternate) payload specialist Jean-Jacques Favier. Mukai represents Japan's National Space Development Agency (NASDA) and Favier represents France's Centre National d'Etudes Spatiales. Photo taken by NASA JSC contract photographer Scott A. Wickes.

  9. STS-65 crewmembers and backup participate in bench review at Boeing Building

    NASA Technical Reports Server (NTRS)

    1994-01-01

    Attired in clean suits, STS-65 Payload Commander (PLC) Richard J. Hieb (left), backup (alternate) payload specialist Jean-Jacques Favier (center), and Payload Specialist Chiaki Mukai look over equipment to be carried aboard the Space Shuttle Columbia, Orbiter Vehicle (OV) 102, for the scheduled July flight of the second International Microgravity Laboratory (IML-2) mission. Hygiene supplies including plaid lintless towels are stacked on the table in front of the crewmembers. The bench review and equipment inspection took place at the Boeing Flight Equipment Processing Facility (FEPF) near the Johnson Space Center (JSC). Mukai represents Japan's National Space Development Agency (NASDA) and Favier represents France's Centre National d'Etudes Spatiales (CNES). Photo taken by NASA JSC contract photographer Scott A. Wickes.

  10. Boeing Crew Exploration Vehicle Environmental Control and Life Support System Architecture Overview

    NASA Technical Reports Server (NTRS)

    Saiidi, Mo; Lewis, John F.

    2007-01-01

    The Boeing Company under the teaming agreement with the Northrop Grumman Systems Corporation and in compliance with the NASA Phase 1 contract, had the responsibilities for the CEV architecture development of the Environmental control and life support (ECLS) system under the NASA Phase 1 contract. The ECLS system was comprised of the various subsystems which provided for a shirt-sleeve habitable environment for crew to live and work in the crew module of the CEV. This architecture met the NASA requirements to ferry cargo and crew to ISS, and Lunar sortie missions, with extensibility to long duration missions to Moon and MARS. This paper provides a summary overview of the CEV ECLS subsystems which was proposed in compliance with the contract activities.

  11. After 24-hour scrub, another tower rollback for the Boeing Delta II rocket carrying Stardust

    NASA Technical Reports Server (NTRS)

    1999-01-01

    As tower rollback begins, the Boeing Delta II rocket carrying the Stardust spacecraft waits on Launch Pad 17-A, Cape Canaveral Air Station, for the second launch attempt at 4:04 p.m. EST. The original launch was scrubbed on Feb. 6 for 24 hours. Stardust is destined for a close encounter with the comet Wild 2 in January 2004. Using a silicon-based substance called aerogel, Stardust will capture comet particles flying off the nucleus of the comet. The spacecraft also will bring back samples of interstellar dust. These materials consist of ancient pre-solar interstellar grains and other remnants left over from the formation of the solar system. Scientists expect their analysis to provide important insights into the evolution of the sun and planets and possibly into the origin of life itself. The collected samples will return to Earth in a sample return capsule to be jettisoned as Stardust swings by Earth in January 2006.

  12. Crash Simulation of a Boeing 737 Fuselage Section Vertical Drop Test

    NASA Technical Reports Server (NTRS)

    Fasanella, Edwin L.; Jackson, Karen E.; Jones, Yvonne T.; Frings, Gary; Vu, Tong

    2004-01-01

    A 30-ft/s vertical drop test of a fuselage section of a Boeing 737 aircraft was conducted in October of 1999 at the FAA Technical Center in Atlantic City, NJ. This test was performed to evaluate the structural integrity of a conformable auxiliary fuel tank mounted beneath the floor and to determine its effect on the impact response of the airframe structure and the occupants. The test data were used to compare with a finite element simulation of the fuselage structure and to gain a better understanding of the impact physics through analytical/experimental correlation. To perform this simulation, a full-scale 3-dimensional finite element model of the fuselage section was developed using the explicit, nonlinear transient-dynamic finite element code, MSC.Dytran. The emphasis of the simulation was to predict the structural deformation and floor-level acceleration responses obtained from the drop test of the B737 fuselage section with the auxiliary fuel tank.

  13. Fairing installed around Stardust and upper stage of Boeing Delta II rocket

    NASA Technical Reports Server (NTRS)

    1999-01-01

    At Launch Pad 17-A, Cape Canaveral Air Station, workers begin placing the fairing around the Stardust spacecraft and upper stage of the Boeing Delta II rocket. Targeted for launch at 4:06:42 p.m. on Feb. 6, Stardust is destined for a close encounter with the comet Wild 2 in January 2004. Using a silicon- based substance called aerogel, Stardust will capture comet particles flying off the nucleus of the comet. The spacecraft also will bring back samples of interstellar dust. These materials consist of ancient pre-solar interstellar grains and other remnants left over from the formation of the solar system. Scientists expect their analysis to provide important insights into the evolution of the sun and planets and possibly into the origin of life itself. The collected samples will return to Earth in a sample return capsule to be jettisoned as Stardust swings by Earth in January 2006.

  14. Fairing installed around Stardust and upper stage of Boeing Delta II rocket

    NASA Technical Reports Server (NTRS)

    1999-01-01

    At Launch Pad 17-A, Cape Canaveral Air Station, the Stardust spacecraft waits for installation of the fairing (behind, right) that will enclose the spacecraft and the upper stage of the Boeing Delta II rocket. Targeted for launch at 4:06:42 p.m. on Feb. 6, Stardust is destined for a close encounter with the comet Wild 2 in January 2004. Using a silicon-based substance called aerogel, Stardust will capture comet particles flying off the nucleus of the comet. The spacecraft also will bring back samples of interstellar dust. These materials consist of ancient pre- solar interstellar grains and other remnants left over from the formation of the solar system. Scientists expect their analysis to provide important insights into the evolution of the sun and planets and possibly into the origin of life itself. The collected samples will return to Earth in a sample return capsule to be jettisoned as Stardust swings by Earth in January 2006.

  15. Fairing installed around Stardust and upper stage of Boeing Delta II rocket

    NASA Technical Reports Server (NTRS)

    1999-01-01

    At Launch Pad 17-A, Cape Canaveral Air Station, workers check the lower fittings of the fairing installed around the Stardust spacecraft and upper stage of the Boeing Delta II rocket. Targeted for launch at 4:06:42 p.m. on Feb. 6, the spacecraft is destined for a close encounter with the comet Wild 2 in January 2004. Using a silicon-based substance called aerogel, Stardust will capture comet particles flying off the nucleus of the comet. The spacecraft also will bring back samples of interstellar dust. These materials consist of ancient pre-solar interstellar grains and other remnants left over from the formation of the solar system. Scientists expect their analysis to provide important insights into the evolution of the sun and planets and possibly into the origin of life itself. The collected samples will return to Earth in a sample return capsule to be jettisoned as Stardust swings by Earth in January 2006.

  16. Flight test of ARINC 741 configuration low gain SATCOM system on Boeing 747-400 aircraft

    NASA Technical Reports Server (NTRS)

    Murphy, Timothy A.; Stapleton, Brian P.

    1990-01-01

    The Boeing company conducted a flight test of a SATCOM system similar to the ARINC 741 configuration on a production model 747-400. A flight plan was specifically designed to test the system over a wide variety of satellite elevations and aircraft attitudes as well as over land and sea. Interface bit errors, signal quality and aircraft position and navigational inputs were all recorded as a function of time. Special aircraft maneuvers were performed to demonstrate the potential for shadowing by aircraft structures. Both a compass rose test and the flight test indicated that shadowing from the tail is insignificant for the 747-400. However, satellite elevation angles below the aircraft horizon during banking maneuvers were shown to have a significant deleterious effect on SATCOM communications.

  17. Language Contact: An Introduction.

    ERIC Educational Resources Information Center

    Thomason, Sarah G.

    This book surveys situations in which language contact arises and focuses on what happens to the languages themselves: sometimes nothing, sometimes the incorporation of new words, sometimes the spread of new sounds and sentence structures across many languages and wide swathes of territory. It outlines the origins and results of contact-induced…

  18. Noneczematous Contact Dermatitis

    PubMed Central

    Foti, Caterina; Vestita, Michelangelo; Angelini, Gianni

    2013-01-01

    Irritant or allergic contact dermatitis usually presents as an eczematous process, clinically characterized by erythematoedematovesicous lesions with intense itching in the acute phase. Such manifestations become erythematous-scaly as the condition progresses to the subacute phase and papular-hyperkeratotic in the chronic phase. Not infrequently, however, contact dermatitis presents with noneczematous features. The reasons underlying this clinical polymorphism lie in the different noxae and contact modalities, as well as in the individual susceptibility and the various targeted cutaneous structures. The most represented forms of non-eczematous contact dermatitis include the erythema multiforme-like, the purpuric, the lichenoid, and the pigmented kinds. These clinical entities must obviously be discerned from the corresponding “pure” dermatitis, which are not associated with contact with exogenous agents. PMID:24109520

  19. Contact dermatitis in athletes.

    PubMed

    Kockentiet, Brett; Adams, Brian B

    2007-06-01

    Athletes face numerous hazards in their daily activities. An athlete's skin, in particular, endures repeated exposure to trauma, heat, moisture, and numerous allergens and chemicals. These factors combine with other unique and less well-defined genetically predisposing factors in the athlete's skin to cause both allergic contact dermatitis (ACD) and irritant contact dermatitis (ICD). As with other cases of contact dermatitis, these eruptions in athletes present as a spectrum of acute to subacute to chronic dermatitis. Recognizing the unique environmental irritants and allergens encountered by athletes is paramount to facilitate appropriate therapy and prevention. This review comprehensively examines the literature on contact dermatitis in athletes. The different types of contact dermatitis have been classified under sport-specific subheadings. Furthermore, within each subheading, both ACD and ICD types are discussed.

  20. Nonlinear realization of local symmetries of AdS space

    SciTech Connect

    Clark, T.E.; Love, S.T.; Nitta, Muneto; Veldhuis, T. ter

    2005-10-15

    Coset methods are used to construct the action describing the dynamics associated with the spontaneous breaking of the local symmetries of AdS{sub d+1} space due to the embedding of an AdS{sub d} brane. The resulting action is an SO(2,d) invariant AdS form of the Einstein-Hilbert action, which in addition to the AdS{sub d} gravitational vielbein, also includes a massive vector field localized on the brane. Its long wavelength dynamics is the same as a massive Abelian vector field coupled to gravity in AdS{sub d} space.

  1. Allergic contact dermatitis.

    PubMed

    Becker, Detlef

    2013-07-01

    Allergic contact dermatitis is a frequent inflammatory skin disease. The suspected diagnosis is based on clinical symptoms, a plausible contact to allergens and a suitable history of dermatitis. Differential diagnoses should be considered only after careful exclusion of any causal contact sensitization. Hence, careful diagnosis by patch testing is of great importance. Modifications of the standardized test procedure are the strip patch test and the repeated open application test. The interpretation of the SLS (sodium lauryl sulfate) patch test as well as testing with the patients' own products and working materials are potential sources of error. Accurate patch test reading is affected in particular by the experience and individual factors of the examiner. Therefore, a high degree of standardization and continuous quality control is necessary and may be supported by use of an online patch test reading course made available by the German Contact Dermatitis Research Group. A critical relevance assessment of allergic patch test reactions helps to avoid relapses and the consideration of differential diagnoses. Any allergic test reaction should be documented in an allergy ID card including the INCI name, if appropriate. The diagnostics of allergic contact dermatitis is endangered by a seriously reduced financing of patch testing by the German statutory health insurances. Restrictive regulations by the German Drug Law block the approval of new contact allergens for routine patch testing. Beside the consistent avoidance of allergen contact, temporary use of systemic and topical corticosteroids is the therapy of first choice.

  2. Dressing phases of AdS3/CFT2

    NASA Astrophysics Data System (ADS)

    Borsato, Riccardo; Ohlsson Sax, Olof; Sfondrini, Alessandro; Stefański, Bogdan, Jr.; Torrielli, Alessandro

    2013-09-01

    We determine the all-loop dressing phases of the AdS3/CFT2 integrable system related to type IIB string theory on AdS3×S3×T4 by solving the recently found crossing relations and studying their singularity structure. The two resulting phases present a novel structure with respect to the ones appearing in AdS5/CFT4 and AdS4/CFT3. In the strongly coupled regime, their leading order reduces to the universal Arutyunov-Frolov-Staudacher phase as expected. We also compute their subleading order and compare it with recent one-loop perturbative results and comment on their weak-coupling expansion.

  3. Bubbling geometries for AdS2× S2

    NASA Astrophysics Data System (ADS)

    Lunin, Oleg

    2015-10-01

    We construct BPS geometries describing normalizable excitations of AdS2×S2. All regular horizon-free solutions are parameterized by two harmonic functions in R 3 with sources along closed curves. This local structure is reminiscent of the "bubbling solutions" for the other AdS p ×S q cases, however, due to peculiar asymptotic properties of AdS2, one copy of R 3 does not cover the entire space, and we discuss the procedure for analytic continuation, which leads to a nontrivial topological structure of the new geometries. We also study supersymmetric brane probes on the new geometries, which represent the AdS2×S2 counterparts of the giant gravitons.

  4. Telescopic vision contact lens

    NASA Astrophysics Data System (ADS)

    Tremblay, Eric J.; Beer, R. Dirk; Arianpour, Ashkan; Ford, Joseph E.

    2011-03-01

    We present the concept, optical design, and first proof of principle experimental results for a telescopic contact lens intended to become a visual aid for age-related macular degeneration (AMD), providing magnification to the user without surgery or external head-mounted optics. Our contact lens optical system can provide a combination of telescopic and non-magnified vision through two independent optical paths through the contact lens. The magnified optical path incorporates a telescopic arrangement of positive and negative annular concentric reflectors to achieve 2.8x - 3x magnification on the eye, while light passing through a central clear aperture provides unmagnified vision.

  5. Optical contacting of quartz

    NASA Technical Reports Server (NTRS)

    Payne, L. L.

    1982-01-01

    The strength of the bond between optically contacted quartz surfaces was investigated. The Gravity Probe-B (GP-B) experiment to test the theories of general relativity requires extremely precise measurements. The quartz components of the instruments to make these measurements must be held together in a very stable unit. Optical contacting is suggested as a possible method of joining these components. The fundamental forces involved in optical contacting are reviewed and relates calculations of these forces to the results obtained in experiments.

  6. [Value-Added--Adding Economic Value in the Food Industry].

    ERIC Educational Resources Information Center

    Welch, Mary A., Ed.

    1989-01-01

    This booklet focuses on the economic concept of "value added" to goods and services. A student activity worksheet illustrates how the steps involved in processing food are examples of the concept of value added. The booklet further links food processing to the idea of value added to the Gross National Product (GNP). Discussion questions, a student…

  7. Fragrance allergic contact dermatitis.

    PubMed

    Cheng, Judy; Zug, Kathryn A

    2014-01-01

    Fragrances are a common cause of allergic contact dermatitis in Europe and in North America. They can affect individuals at any age and elicit a spectrum of reactions from contact urticaria to systemic contact dermatitis. Growing recognition of the widespread use of fragrances in modern society has fueled attempts to prevent sensitization through improved allergen identification, labeling, and consumer education. This review provides an overview and update on fragrance allergy. Part 1 discusses the epidemiology and evaluation of suspected fragrance allergy. Part 2 reviews screening methods, emerging fragrance allergens, and management of patients with fragrance contact allergy. This review concludes by examining recent legislation on fragrances and suggesting potential additions to screening series to help prevent and detect fragrance allergy.

  8. Occupational Contact Dermatitis

    PubMed Central

    2008-01-01

    Occupational contact dermatitis accounts for 90% of all cases of work-related cutaneous disorders. It can be divided into irritant contact dermatitis, which occurs in 80% of cases, and allergic contact dermatitis. In most cases, both types will present as eczematous lesions on exposed parts of the body, notably the hands. Accurate diagnosis relies on meticulous history taking, thorough physical examination, careful reading of Material Safety Data Sheets to distinguish between irritants and allergens, and comprehensive patch testing to confirm or rule out allergic sensitization. This article reviews the pathogenesis and clinical manifestations of occupational contact dermatitis and provides diagnostic guidelines and a rational approach to management of these often frustrating cases. PMID:20525126

  9. Contacting American Overseas Schools.

    ERIC Educational Resources Information Center

    Engelhardt, David

    1993-01-01

    Provides contacts for architects or educational consultants who wish to work overseas. Cites a directory, newsletters, newspapers, and associations focused on educators involved with independent overseas schools that are organized around the United States curriculum. (MLF)

  10. Relay contact monitoring system

    SciTech Connect

    Mehta, V.

    1994-01-11

    A switching system for switching on and off heating and air conditioning units in an environmental control system. The switching system includes a thermostat and a relay conductively coupled to the thermostat. The relay has a contact, which is responsive to a change signal for changing its position. The system further includes a programmable monitor having predetermined positions stored in a memory. The monitor is conductively coupled to the contact and to the thermostat for continually determining the position of the contact, and for sending a change signal to the relay for switching the position of the contact, as needed, to be in conformance with a predetermined position stored in the memory. 3 figs.

  11. Design, ancillary testing, analysis and fabrication data for the advanced composite stabilizer for Boeing 737 aircraft, volume 2

    NASA Technical Reports Server (NTRS)

    Aniversario, R. B.; Harvey, S. T.; Mccarty, J. E.; Parsons, J. T.; Peterson, D. C.; Pritchett, L. D.; Wilson, D. R.; Wogulis, E. R.

    1982-01-01

    Results of tests conducted to demonstrate that composite structures save weight, possess long term durability, and can be fabricated at costs competitive with conventional metal structures are presented with focus on the use of graphite-epoxy in the design of a stabilizer for the Boeing 737 aircraft. Component definition, materials evaluation, material design properties, and structural elements tests are discussed. Fabrication development, as well as structural repair and inspection are also examined.

  12. The impact of contact

    NASA Astrophysics Data System (ADS)

    Finney, B.

    1986-10-01

    Scenarios of the impact on human society of radio contact with an extraterrestrial civilization are presented. Some believe that contact with advanced extraterrestrials would quickly devastate the human spirit, while others believe that these super-intelligent beings would show the inhabitants of the earth how to live in peace. It is proposed that the possible existence of extraterrestrial civilizations and the development of means of studying and communicating with them need to be considered.

  13. ELECTRIC CONTACT MEANS

    DOEpatents

    Grear, J.W. Jr.

    1959-03-10

    A switch adapted to maintain electrical connections under conditions of vibration or acceleration is described. According to the invention, thc switch includes a rotatable arm carrying a conductive bar arranged to close against two contacts spaced in the same plane. The firm and continuous engagement of the conductive bar with the contacts is acheived by utilizeing a spring located betwenn the vbar and athe a rem frzme and slidable mounting the bar in channel between two arms suspendef from the arm frame.

  14. Lettuce contact allergy.

    PubMed

    Paulsen, Evy; Andersen, Klaus E

    2016-02-01

    Lettuce (Lactuca sativa L.) and its varieties are important vegetable crops worldwide. They are also well-known, rarely reported, causes of contact allergy. As lettuce allergens and extracts are not commercially available, the allergy may be underdiagnosed. The aims of this article are to present new data on lettuce contact allergy and review the literature. Lettuce is weakly allergenic, and occupational cases are mainly reported. Using aimed patch testing in Compositae-allergic patients, two recent Danish studies showed prevalence rates of positive lettuce reactions of 11% and 22%. The majority of cases are non-occupational, and may partly be caused by cross-reactivity. The sesquiterpene lactone mix seems to be a poor screening agent for lettuce contact allergy, as the prevalence of positive reactions is significantly higher in non-occupationally sensitized patients. Because of the easy degradability of lettuce allergens, it is recommended to patch test with freshly cut lettuce stem and supplement this with Compositae mix. As contact urticaria and protein contact dermatitis may present as dermatitis, it is important to perform prick-to-prick tests, and possibly scratch patch tests as well. Any person who is occupationally exposed to lettuce for longer periods, especially atopics, amateur gardeners, and persons keeping lettuce-eating pets, is potentially at risk of developing lettuce contact allergy.

  15. Action growth for AdS black holes

    NASA Astrophysics Data System (ADS)

    Cai, Rong-Gen; Ruan, Shan-Ming; Wang, Shao-Jiang; Yang, Run-Qiu; Peng, Rong-Hui

    2016-09-01

    Recently a Complexity-Action (CA) duality conjecture has been proposed, which relates the quantum complexity of a holographic boundary state to the action of a Wheeler-DeWitt (WDW) patch in the anti-de Sitter (AdS) bulk. In this paper we further investigate the duality conjecture for stationary AdS black holes and derive some exact results for the growth rate of action within the Wheeler-DeWitt (WDW) patch at late time approximation, which is supposed to be dual to the growth rate of quantum complexity of holographic state. Based on the results from the general D-dimensional Reissner-Nordström (RN)-AdS black hole, rotating/charged Bañados-Teitelboim-Zanelli (BTZ) black hole, Kerr-AdS black hole and charged Gauss-Bonnet-AdS black hole, we present a universal formula for the action growth expressed in terms of some thermodynamical quantities associated with the outer and inner horizons of the AdS black holes. And we leave the conjecture unchanged that the stationary AdS black hole in Einstein gravity is the fastest computer in nature.

  16. Superstring theory in AdS(3) and plane waves

    NASA Astrophysics Data System (ADS)

    Son, John Sang Won

    This thesis is devoted to the study of string theory in AdS 3 and its applications to recent developments in string theory. The difficulties associated with formulating a consistent string theory in AdS3 and its underlying SL(2, R) WZW model are explained. We describe how these difficulties can be overcome by assuming that the SL(2, R) WZW model contains spectral flow symmetry. The existence of spectral flow symmetry in the fully quantum treatment is proved by a calculation of the one-loop string partition function. We consider Euclidean AdS 3 with the time direction periodically identified, and compute the torus partition function in this background. The string spectrum can be reproduced by viewing the one-loop calculation as the free energy of a gas of strings, thus providing a rigorous proof of the results based on spectral flow arguments. Next, we turn to spacetimes that are quotients of AdS 3, which include the BTZ black hole and conical spaces. Strings propagating in the conical space are described by taking an orbifold of strings in AdS3. We show that the twisted states of these orbifolds can be obtained by fractional spectral flow. We show that the shift in the ground state energy usually associated with orbifold twists is absent in this case, and offer a unified framework in which to view spectral flow. Lastly, we consider the RNS superstrings in AdS 3 x S3 x M , where M may be K3 or T 4, based on supersymmetric extensions of SL(2, R) and SU(2) WZW models. We construct the physical states and calculate the spectrum. A subsector of this theory describes strings propagating in the six dimensional plane wave obtained by the Penrose limit of AdS3 x S3 x M . We reproduce the plane wave spectrum by taking J and the radius to infinity. We show that the plane wave spectrum actually coincides with the large J spectrum at fixed radius, i.e. in AdS3 x S3. Relation to some recent topics of interest such as the Frolov-Tseytlin string and strings with critical tension

  17. Experimental and Computational Sonic Boom Assessment of Boeing N+2 Low Boom Models

    NASA Technical Reports Server (NTRS)

    Durston, Donald A.; Elmiligui, Alaa; Cliff, Susan E.; Winski, Courtney S.; Carter, Melissa B.; Walker, Eric L.

    2015-01-01

    Near-field pressure signatures were measured and computational predictions made for several sonic boom models representing Boeing's Quiet Experimental Validation Concept (QEVC) supersonic transport, as well as three axisymmetric calibration models. Boeing developed the QEVC under a NASA Research Announcement (NRA) contract for Experimental Systems Validations for N+2 Supersonic Commercial Transport Aircraft, which was led by the NASA High Speed Project under the Fundamental Aeronautics Program. The concept was designed to address environmental and performance goals given in the NRA, specifically for low sonic boom loudness levels and high cruise efficiency, for an aircraft anticipated to enter service in the 2020 timeframe. Wind tunnel tests were conducted on the aircraft and calibration models during Phases I and II of the NRA contract from 2011 to 2013 in the NASA Ames 9- by 7-Foot and NASA Glenn 8- by 6-Foot Supersonic Wind Tunnels. Sonic boom pressure signatures were acquired primarily at Mach 1.6 and 1.8, and force and moment data were acquired from Mach 0.8 to 1.8. The sonic boom test data were obtained using a 2-in. flat-top pressure rail and a 14-in. round-top tapered "reflection factor 1" (RF1) pressure rail. Both rails capture an entire pressure signature in one data point, and successive signatures at varying positions along or above the rail were used to improve data quality through spatial averaging. The sonic boom data obtained by the rails were validated with high-fidelity numerical simulations of off-body pressures using the CFD codes USM3D, Cart3D, and OVERFLOW. The test results from the RF1 rail showed good agreement between the computational and experimental data when a variety of testing techniques including spatial averaging of a series of pressure signatures were employed, however, reflections off the 2-in. flat-top rail caused distortions in the signatures that did not agree with the CFD predictions. The 9 x 7 and 8 x 6 wind tunnels generally

  18. The contact caveat: negative contact predicts increased prejudice more than positive contact predicts reduced prejudice.

    PubMed

    Barlow, Fiona Kate; Paolini, Stefania; Pedersen, Anne; Hornsey, Matthew J; Radke, Helena R M; Harwood, Jake; Rubin, Mark; Sibley, Chris G

    2012-12-01

    Contact researchers have largely overlooked the potential for negative intergroup contact to increase prejudice. In Study 1, we tested the interaction between contact quantity and valence on prejudice toward Black Australians (n = 1,476), Muslim Australians (n = 173), and asylum seekers (n = 293). In all cases, the association between contact quantity and prejudice was moderated by its valence, with negative contact emerging as a stronger and more consistent predictor than positive contact. In Study 2, White Americans (n = 441) indicated how much positive and negative contact they had with Black Americans on separate measures. Although both quantity of positive and negative contact predicted racism and avoidance, negative contact was the stronger predictor. Furthermore, negative (but not positive) contact independently predicted suspicion about Barack Obama's birthplace. These results extend the contact hypothesis by issuing an important caveat: Negative contact may be more strongly associated with increased racism and discrimination than positive contact is with its reduction.

  19. Contact Lenses for Vision Correction

    MedlinePlus

    ... Contact Lenses Colored Contact Lenses Contact Lenses for Vision Correction Written by: Kierstan Boyd Reviewed by: Brenda ... on the surface of the eye. They correct vision like eyeglasses do and are safe when used ...

  20. Entanglement entropy for free scalar fields in AdS

    NASA Astrophysics Data System (ADS)

    Sugishita, Sotaro

    2016-09-01

    We compute entanglement entropy for free massive scalar fields in anti-de Sitter (AdS) space. The entangling surface is a minimal surface whose boundary is a sphere at the boundary of AdS. The entropy can be evaluated from the thermal free energy of the fields on a topological black hole by using the replica method. In odd-dimensional AdS, exact expressions of the Rényi entropy S n are obtained for arbitrary n. We also evaluate 1-loop corrections coming from the scalar fields to holographic entanglement entropy. Applying the results, we compute the leading difference of entanglement entropy between two holographic CFTs related by a renormalization group flow triggered by a double trace deformation. The difference is proportional to the shift of a central charge under the flow.

  1. Asymptotically AdS spacetimes with a timelike Kasner singularity

    NASA Astrophysics Data System (ADS)

    Ren, Jie

    2016-07-01

    Exact solutions to Einstein's equations for holographic models are presented and studied. The IR geometry has a timelike cousin of the Kasner singularity, which is the less generic case of the BKL (Belinski-Khalatnikov-Lifshitz) singularity, and the UV is asymptotically AdS. This solution describes a holographic RG flow between them. The solution's appearance is an interpolation between the planar AdS black hole and the AdS soliton. The causality constraint is always satisfied. The entanglement entropy and Wilson loops are discussed. The boundary condition for the current-current correlation function and the Laplacian in the IR is examined. There is no infalling wave in the IR, but instead, there is a normalizable solution in the IR. In a special case, a hyperscaling-violating geometry is obtained after a dimensional reduction.

  2. New massive gravity and AdS(4) counterterms.

    PubMed

    Jatkar, Dileep P; Sinha, Aninda

    2011-04-29

    We show that the recently proposed Dirac-Born-Infeld extension of new massive gravity emerges naturally as a counterterm in four-dimensional anti-de Sitter space (AdS(4)). The resulting on-shell Euclidean action is independent of the cutoff at zero temperature. We also find that the same choice of counterterm gives the usual area law for the AdS(4) Schwarzschild black hole entropy in a cutoff-independent manner. The parameter values of the resulting counterterm action correspond to a c=0 theory in the context of the duality between AdS(3) gravity and two-dimensional conformal field theory. We rewrite this theory in terms of the gauge field that is used to recast 3D gravity as a Chern-Simons theory. PMID:21635026

  3. Detailed ultraviolet asymptotics for AdS scalar field perturbations

    NASA Astrophysics Data System (ADS)

    Evnin, Oleg; Jai-akson, Puttarak

    2016-04-01

    We present a range of methods suitable for accurate evaluation of the leading asymptotics for integrals of products of Jacobi polynomials in limits when the degrees of some or all polynomials inside the integral become large. The structures in question have recently emerged in the context of effective descriptions of small amplitude perturbations in anti-de Sitter (AdS) spacetime. The limit of high degree polynomials corresponds in this situation to effective interactions involving extreme short-wavelength modes, whose dynamics is crucial for the turbulent instabilities that determine the ultimate fate of small AdS perturbations. We explicitly apply the relevant asymptotic techniques to the case of a self-interacting probe scalar field in AdS and extract a detailed form of the leading large degree behavior, including closed form analytic expressions for the numerical coefficients appearing in the asymptotics.

  4. Shoe allergic contact dermatitis.

    PubMed

    Matthys, Erin; Zahir, Amir; Ehrlich, Alison

    2014-01-01

    Foot dermatitis is a widespread condition, affecting men and women of all ages. Because of the location, this condition may present as a debilitating problem to those who have it. Allergic contact dermatitis involving the feet is frequently due to shoes or socks. The allergens that cause shoe dermatitis can be found in any constituent of footwear, including rubber, adhesives, leather, dyes, metals, and medicaments. The goal of treatment is to identify and minimize contact with the offending allergen(s). The lack of product information released from shoe manufacturers and the continually changing trends in footwear present a challenge in treating this condition. The aim of this study is to review the current literature on allergic contact shoe dermatitis; clinical presentation, allergens, patch testing, and management will be discussed. PubMed and MEDLINE databases were used for the search, with a focus on literature updates from the last 15 years.

  5. Acrylate Systemic Contact Dermatitis.

    PubMed

    Sauder, Maxwell B; Pratt, Melanie D

    2015-01-01

    Acrylates, the 2012 American Contact Dermatitis Society allergen of the year, are found in a range of products including the absorbent materials within feminine hygiene pads. When fully polymerized, acrylates are nonimmunogenic; however, if not completely cured, the monomers can be potent allergens.A 28-year-old woman is presented, who had her teeth varnished with Isodan (Septodont, Saint-Maur-des-Fossés, France) containing HEMA (2-hydroxyethyl methacrylate) with no initial reaction. Approximately 1 month later, the patient developed a genital dermatitis secondary to her feminine hygiene pads. The initial reaction resolved, but 5 months later, the patient developed a systemic contact dermatitis after receiving a second varnishing.The patient was dramatically patch test positive to many acrylates. This case demonstrates a reaction to likely unpolymerized acrylates within a feminine hygiene pad, as well as broad cross-reactivity or cosensitivity to acrylates, and possibly a systemic contact dermatitis with systemic re-exposure to unpolymerized acrylates.

  6. Holography and AdS4 self-gravitating dyons

    NASA Astrophysics Data System (ADS)

    Lugo, A. R.; Moreno, E. F.; Schaposnik, F. A.

    2010-11-01

    We present a self-gravitating dyon solution of the Einstein-Yang-Mills-Higgs equations of motion in asymptotically AdS space. The back reaction of gauge and Higgs fields on the space-time geometry leads to the metric of an asymptotically AdS black hole. Using the gauge/gravity correspondence we analyze relevant properties of the finite temperature quantum field theory defined on the boundary. In particular we identify an order operator, characterize a phase transition of the dual theory on the border and also compute the expectation value of the finite temperature Wilson loop.

  7. AdS box graphs, unitarity and operator product expansions

    NASA Astrophysics Data System (ADS)

    Hoffmann, L.; Mesref, L.; Rühl, W.

    2000-11-01

    We develop a method of singularity analysis for conformal graphs which, in particular, is applicable to the holographic image of AdS supergravity theory. It can be used to determine the critical exponents for any such graph in a given channel. These exponents determine the towers of conformal blocks that are exchanged in this channel. We analyze the scalar AdS box graph and show that it has the same critical exponents as the corresponding CFT box graph. Thus pairs of external fields couple to the same exchanged conformal blocks in both theories. This is looked upon as a general structural argument supporting the Maldacena hypothesis.

  8. Phases of global AdS black holes

    NASA Astrophysics Data System (ADS)

    Basu, Pallab; Krishnan, Chethan; Subramanian, P. N. Bala

    2016-06-01

    We study the phases of gravity coupled to a charged scalar and gauge field in an asymptotically Anti-de Sitter spacetime ( AdS 4) in the grand canonical ensemble. For the conformally coupled scalar, an intricate phase diagram is charted out between the four relevant solutions: global AdS, boson star, Reissner-Nordstrom black hole and the hairy black hole. The nature of the phase diagram undergoes qualitative changes as the charge of the scalar is changed, which we discuss. We also discuss the new features that arise in the extremal limit.

  9. The forecaster's added value

    NASA Astrophysics Data System (ADS)

    Turco, M.; Milelli, M.

    2009-09-01

    skill scores of two competitive forecast. It is important to underline that the conclusions refer to the analysis of the Piemonte operational alert system, so they cannot be directly taken as universally true. But we think that some of the main lessons that can be derived from this study could be useful for the meteorological community. In details, the main conclusions are the following: - despite the overall improvement in global scale and the fact that the resolution of the limited area models has increased considerably over recent years, the QPF produced by the meteorological models involved in this study has not improved enough to allow its direct use, that is, the subjective HQPF continues to offer the best performance; - in the forecast process, the step where humans have the largest added value with respect to mathematical models, is the communication. In fact the human characterisation and communication of the forecast uncertainty to end users cannot be replaced by any computer code; - eventually, although there is no novelty in this study, we would like to show that the correct application of appropriated statistical techniques permits a better definition and quantification of the errors and, mostly important, allows a correct (unbiased) communication between forecasters and decision makers.

  10. 76 FR 5505 - Airworthiness Directives; The Boeing Company Model 777-200 Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-02-01

    ... module, overhead electronics units, and seat electronics unit. This proposed AD results from an IFE... controller, cabin interphone controller, CACP, speaker drive module, overhead electronics unit, and seat electronics unit. FAA's Determination and Requirements of This Proposed AD We are proposing this AD because...

  11. Investigations on the main engines exhaust of two Boeing 767-3ZR

    NASA Astrophysics Data System (ADS)

    Lechner, Bernhard; Bacher, Michael; Rodler, Johannes; Sturm, Peter J.

    2004-02-01

    The main engines exhaust of two Boeing 767-3ZR(ER) powered by Pratt & Whitney 4060 has been intensively studied using spectroscopic methods like Fourier Transform Infrared Spectroscopy (FTIR) and Differential Optical Absorption Spectroscopy (DOAS). All cockpit data was provided by the operating airline while the thrust level was varied between idle (25% N1) and 70 % N1 where N1 is the maximum number of revolutions of the fan. The investigated gaseous species were carbon dioxide, carbon monoxide, nitrogen oxides (NO and NO2) and some hydrocarbons (C2H4, C2H2, HCOH and unburned kerosene). A comparison to the database of the International Civil Aviation Organization (ICAO) showed much higher emissions of CO and NOx-emissions in the same range. Although these two aircraft were of the same age and maintained by the same operator the emissions differed by a factor of two. Formaldehyde proved to be the most abundant hydrocarbon besides ethane and ethane.

  12. Auxiliary power unit noise of Boeing B737 and B747 aircraft

    NASA Astrophysics Data System (ADS)

    Kwan, Jimmy S. W.; Yang, S. J. Eric

    Most modern civil aircraft have an Auxiliary Power Unit (APU) which provides compressed air for engine starting and the air-conditioning system on ground and electrical power for aircraft use both on-ground and in-fligth. It is basically a gas turbine engine and it consists of a compressor section, a turbine section, and an accessory drive section. For Boeing B737 and B747 aircraft, the APU is located inside a compartment in the tail section of the aircraft and is completely enclosed by a sound-reduction fire-proof titanium shroud. APU noise is one of the major noise sources at many airports and is extremely important for a densely populated city such as Hong Kong. The noise from APU can affect many people, including ground crew aircraft maintenance staff, and people living in the vicinity of the airport. However, there is very little information available in the literature about APU noise. This paper describes the noise measurement method and presents the measurement results for APUs of one B747 and two B737 aircraft under both 'loaded' and 'no-load' conditions.

  13. Navier-Stokes Flowfield Simulation of Boeing 747-200 as Platform for SOFIA

    NASA Technical Reports Server (NTRS)

    Srinivasan, G.R.

    1994-01-01

    Steady and unsteady viscous, three-dimensional flowfields are calculated using a thin layer approximation of Navier-Stokes equations in conjunction with Chimera overset grids. The finite-difference numerical scheme uses structured grids and a pentadiagonal flow solver called "OVERFLOW". The configuration of Boeing 747-200 has been chosen as one of configurations to be used as a platform for the SOFIA (Stratospheric Observatory For Infrared Astronomy). Initially, the steady flowfield of the full aircraft is calculated for the clean configuration (without a cavity to house telescope). This solution is then used to start the unsteady flowfield of a configuration containing cavity housing the observation telescope and its peripheral units. Analysis of unsteady flowfield in the cavity and its influence on the tail empennage, as well as the noise due to turbulence and optical quality of the flow are the main focus of this study. For the configuration considered here, the telescope housing cavity is located slightly downstream of the portwing. The entire flow-field is carefully constructed using 45 overset grids and consists of nearly 4 million grid points. All the computations axe done at one freestream flow condition of M(sub infinity) = 0.85, alpha = 2.5deg, and a Reynolds of Re = 1.85x10deg

  14. Results of the Boeing/DOE DECC Phase 1 stirling engine project

    SciTech Connect

    STONE,KENNETH W.; CLARK,TERRY; NELVING,HANS; DIVER JR.,RICHARD B.

    2000-03-02

    Phase I of Boeing Company/DOE Dish Engine Critical Component (DECC) Project started in April of 1998 and was completed in 1999. The Phase I objectives, schedule, and test results are presented in this paper. These data shows the power, energy, and mirror performance are comparable to that when the hardware was first manufactured 15 years ago. During the Phase I and initial Phase II test period the on-sun system accumulated over 3,800 hours of solar-powered operating time, accumulated over 4,500 hours of concentrator solar tracking time, and generated over 50,000 kWh of grid-compatible electrical energy. The data also shows that the system was available 95 {percent} of the time when the sun's insolation level was above approximately 300 w/m{sup 2}, and achieved a daily energy efficiency between 20{percent} and 26{percent}. A second concentrator was refurbished during Phase I and accumulated over 2,200 hours of solar track time. A second Stirling engine operated 24 hours a day in a test cell in Sweden and accumulated over 6,000 test hours. Discussion of daily operation shows no major problems encountered during the testing that would prevent commercialization of the technology. Further analysis of the test data shows that system servicing with hydrogen, coolant and lubricating oil should not be a major O and M cost.

  15. Site Environmental Report for Calendar Year 2003 DOE Operations at The Boeing Company, Rocketdyne Propulsion & Power

    SciTech Connect

    Liu, Ning; Rutherford, Phil; Samuels, Sandy; Lee, Majelle

    2004-09-30

    This Annual Site Environmental Report (ASER) for 2003 describes the environmental conditions related to work performed for the Department of Energy (DOE) at Area IV of Boeing Rocketdyne’s Santa Susana Field Laboratory (SSFL). In the past, the Energy Technology Engineering Center (ETEC), a government-owned, company-operated test facility, was located in Area IV. The operations at ETEC included development, fabrication, and disassembly of nuclear reactors, reactor fuel, and other radioactive materials. Other activities at ETEC involved the operation of large-scale liquid metal facilities that were used for testing liquid metal fast breeder components. All nuclear work was terminated in 1988; all subsequent radiological work has been directed toward decontamination and decommissioning (D&D) of the former nuclear facilities and their associated sites. Closure of the liquid metal test facilities began in 1996. Results of the radiological monitoring program for the calendar year 2003 continue to indicate that there are no significant releases of radioactive material from Area IV of SSFL. All potential exposure pathways are sampled and/or monitored, including air, soil, surface water, groundwater, direct radiation, transfer of property (land, structures, waste), and recycling.

  16. Site Environmental Report for Calendar Year 1999. DOE Operations at The Boeing Company, Rocketdyne

    SciTech Connect

    2000-09-01

    OAK A271 Site Environmental Report for Calendar Year 1999. DOE Operations at The Boeing Company, Rocketdyne. This Annual Site Environmental Report (ASER) for 1999 describes the environmental conditions related to work performed for the Department of Energy (DOE) at Area IV of the Rocketdyne Santa Susana Field Laboratory (SSFL). In the past, these operations included development, fabrication, and disassembly of nuclear reactors, reactor fuel, and other radioactive materials under the former Atomics International Division. Other activities included the operation of large-scale liquid metal facilities for testing of liquid metal fast breeder components at the Energy Technology Engineering Center (ETEC), a government-owned, company-operated test facility within Area IV. All nuclear work was terminated in 1988, and subsequently, all radiological work has been directed toward decontamination and decommissioning (D&D) of the previously used nuclear facilities and associated site areas. Large-scale D&D activities of the sodium test facilities began in 1996. This Annual Site Environmental Report provides information showing that there are no indications of any potential impact on public health and safety due to the operations conducted at the SSFL. All measures and calculations of off-site conditions demonstrate compliance with applicable regulations, which provide for protection of human health and the environment.

  17. Site Environmental Report for Calendar Year 2001. DOE Operations at The Boeing Company, Rocketdyne Propulsion & Power

    SciTech Connect

    Rutherford, Phil; Samuels, Sandy; Leee, Majelle

    2002-09-01

    This Annual Site Environmental Report (ASER) for 2001 describes the environmental conditions related to work performed for the Department of Energy (DOE) at Area IV of the Boeing Rocketdyne Santa Susana Field Laboratory (SSFL). In the past, these operations included development, fabrication, and disassembly of nuclear reactors, reactor fuel, and other radioactive materials under the former Atomics International (AI) Division. Other activities included the operation of large-scale liquid metal facilities for testing of liquid metal fast breeder components at the Energy Technology Engineering Center (ETEC), a government-owned, company-operated test facility within Area IV. All nuclear work was terminated in 1988, and subsequently, all radiological work has been directed toward decontamination and decommissioning (D&D) of the previously used nuclear facilities and associated site areas. Closure of the sodium test facilities began in 1996. Results of the radiological monitoring program for the calendar year of 2001 continue to indicate that there are no significant releases of radioactive material from Area IV of SSFL. All potential exposure pathways are sampled and/or monitored, including air, soil, surface water, groundwater, direct radiation, transfer of property (land, structures, waste), and recycling. All radioactive wastes are processed for disposal at DOE disposal sites and other sites approved by DOE and licensed for radioactive waste. Liquid radioactive wastes are not released into the environment and do not constitute an exposure pathway. No structural debris from buildings, released for unrestricted use, was transferred to municipal landfills or recycled in 2001.

  18. Airline pilot scanning behavior during approaches and landing in a Boeing 737 simulator

    NASA Technical Reports Server (NTRS)

    Spady, A. A., Jr.

    1978-01-01

    A series of approaches using airline-rated Boeing 737 pilots in an FAA qualified simulator was conducted. The test matrices include both manual and coupled approaches for VFR, Category 1 and Category 2 conditions. A nonintrusive oculometer system was used to track the pilot's eye-point-of-regard throughout the approach. The results indicate that, in general, the pilots use a different scan technique for the manual and coupled (auto-pilot with manual throttle) conditions. For the manual approach 73 percent of the time was spent on the Flight Director and 13 percent on airspeed as opposed to 50 percent on Flight Director and 23 percent on airspeed for the coupled approaches. For the visual portion of approach from less than 100m to touchdown or when the touchdown point came into view, the pilots tend to fixate on their aim or touchdown area until the flare initiation, at which time they let their eye-point-of-regard move up the runway to use the centerline lights for rollout guidance.

  19. Have Confidence in Contact

    ERIC Educational Resources Information Center

    Crisp, Richard J.; Turner, Rhiannon N.

    2010-01-01

    In an article in the May-June 2009 "American Psychologist," we discussed a new approach to reducing prejudice and encouraging more positive intergroup relations (Crisp & Turner, 2009). We named the approach imagined intergroup contact and defined it as "the mental simulation of a social interaction with a member or members of an outgroup category"…

  20. The Language Contact Profile

    ERIC Educational Resources Information Center

    Freed, Barbara F.; Dewey, Dan P.; Segalowitz, Norman; Halter, Randall

    2004-01-01

    Efforts to gather data of various sorts--demographics, language-learning history, contact with native speakers, use of the language in the field--as they relate to participants in SLA research studies are inherent to understanding more about language acquisition and use. Scholars frequently develop questionnaires of their own, which are rarely…

  1. Thermal Contact Conductance

    NASA Technical Reports Server (NTRS)

    Salerno, Louis J.; Kittel, Peter

    1997-01-01

    The performance of cryogenic instruments is often a function of their operating temperature. Thus, designers of cryogenic instruments often are required to predict the operating temperature of each instrument they design. This requires accurate thermal models of cryogenic components which include the properties of the materials and assembly techniques used. When components are bolted or otherwise pressed together, a knowledge of the thermal performance of such joints are also needed. In some cases, the temperature drop across these joints represents a significant fraction of the total temperature difference between the instrument and its cooler. While extensive databases exist on the thermal properties of bulk materials, similar databases for pressed contacts do not. This has often lead to instrument designs that avoid pressed contacts or to the over-design of such joints at unnecessary expense. Although many people have made measurements of contact conductances at cryogenic temperatures, this data is often very narrow in scope and even more often it has not been published in an easily retrievable fashion, if published at all. This paper presents a summary of the limited pressed contact data available in the literature.

  2. [Contact allergies in musicians].

    PubMed

    Gasenzer, E R; Neugebauer, E A M

    2012-12-01

    During the last years, the problem of allergic diseases has increased. Allergies are errant immune responses to a normally harmless substance. In musicians the allergic contact dermatitis to exotic woods is a special problem. Exotic rosewood contains new flavonoids, which trigger an allergic reaction after permanent contact with the instrument. High quality woodwind instruments such as baroque flute or clarinets are made in ebony or palisander because of its great sound. Today instruments for non-professional players are also made in these exotic materials and non-professionals may have the risk to develop contact dermatitis, too. Brass-player has the risk of an allergic reaction to the different metals contained in the metal sheets of modern flutes and brass instruments. Specially nickel and brass alloys are used to product flute tubes or brass instruments. Special problem arises in children: patients who are allergic to plants or foods have a high risk to develop contact dermatitis. Parents don't know the materials of low-priced instruments for beginners. Often unknown cheap woods from exotic areas are used. Low-priced brass instruments contain high amount of brass and other cheap metals. Physicians should advice musician-patients or parents about the risks of the different materials and look for the reason of eczema on mouth, face, or hands. PMID:23233303

  3. Contact sensitivity to proflavine.

    PubMed

    Goh, C L

    1986-09-01

    Proflavine lotion is a commonly used topical antiseptic in the tropics, but its sensitizing potential was never emphasized and many who developed allergic contact dermatitis were never aware of it. In a study of 45 patients, most presented with acute or subacute dermatitis which started on the arms and legs. Concomitant cutaneous sensitivity to other medicaments and lanolin occurred in 66% of the patients.

  4. [Current contact allergens].

    PubMed

    Geier, J; Uter, W; Lessmann, H; Schnuch, A

    2011-10-01

    Ever-changing exposure to contact allergens, partly due to statutory directives (e.g. nickel, chromate, methyldibromo glutaronitrile) or recommendations from industrial associations (e.g. hydroxyisohexyl 3-cyclohexene carboxaldehyde), requires on-going epidemiologic surveillance of contact allergy. In this paper, the current state with special focus in fragrances and preservatives is described on the basis of data of the Information Network of Departments of Dermatology (IVDK) of the year 2010. In 2010, 12,574 patients were patch tested in the dermatology departments belonging to the IVDK. Nickel is still the most frequent contact allergen. However the continuously improved EU nickel directive already has some beneficial effect; sensitization frequency in young women is dropping. In Germany, chromate-reduced cement has been in use now for several years, leading to a decline in chromate sensitization in brick-layers. Two fragrance mixes are part of the German baseline series; they are still relevant. The most important fragrances in these mixes still are oak moss absolute and hydroxyisohexyl 3-cyclohexene carboxaldehyde. However, in relation to these leading allergens, sensitization frequency to other fragrances contained in the mixes seems to be increasing. Among the preservatives, MCI/MI has not lost its importance as contact allergen, in contrast to MDBGN. Sources of MCI/MI sensitization obviously are increasingly found in occupational context. Methylisothiazolinone is a significant allergen in occupational settings, and less frequently in body care products.

  5. Contact Efflorescence on Demand

    NASA Astrophysics Data System (ADS)

    Davis, R. D.; Lance, S.; Gordon, J. A.; Ushijima, S.; Tolbert, M. A.

    2014-12-01

    The phase state of atmospheric aerosols (liquid vs solid) plays an important role in particle growth, cloud formation, climate impact and visibility degradation. In the atmosphere, changes in relative humidity (RH) and temperature cause phase transitions in the atmospheric particulate. Efflorescence, the process of salt crystal nucleation from an aqueous electrolyte solution upon decreasing RH, often occurs at a lower RH than the reverse process of deliquescence. It has been shown that the efflorescence RH can occur at a higher RH in the presence of a heterogeneous surface immersed in a liquid particle. Here we present a new laboratory technique using optically levitated particles to study heterogeneous efflorescence initiated by contact with an external particle. In this work, collisions between aqueous microdroplets and heterogeneous nuclei are monitored in situ using scattered laser light to quantify the number of collisions and to detect phase transitions. We find that when contact initiates the phase transition, efflorescence occurs at a higher RH than when the same heterogeneous nucleus is immersed in the particle. The results of these experiments will be discussed in the context of understanding contact nucleation on a mechanistic level and predicting the relative importance of contact efflorescence in the atmosphere.

  6. Multigrid contact detection method

    NASA Astrophysics Data System (ADS)

    He, Kejing; Dong, Shoubin; Zhou, Zhaoyao

    2007-03-01

    Contact detection is a general problem of many physical simulations. This work presents a O(N) multigrid method for general contact detection problems (MGCD). The multigrid idea is integrated with contact detection problems. Both the time complexity and memory consumption of the MGCD are O(N) . Unlike other methods, whose efficiencies are influenced strongly by the object size distribution, the performance of MGCD is insensitive to the object size distribution. We compare the MGCD with the no binary search (NBS) method and the multilevel boxing method in three dimensions for both time complexity and memory consumption. For objects with similar size, the MGCD is as good as the NBS method, both of which outperform the multilevel boxing method regarding memory consumption. For objects with diverse size, the MGCD outperform both the NBS method and the multilevel boxing method. We use the MGCD to solve the contact detection problem for a granular simulation system based on the discrete element method. From this granular simulation, we get the density property of monosize packing and binary packing with size ratio equal to 10. The packing density for monosize particles is 0.636. For binary packing with size ratio equal to 10, when the number of small particles is 300 times as the number of big particles, the maximal packing density 0.824 is achieved.

  7. Compact contacting device

    NASA Technical Reports Server (NTRS)

    Acharya, Arun (Inventor); Gottzmann, Christian F. (Inventor); Lockett, Michael J. (Inventor); Schneider, James S. (Inventor); Victor, Richard A. (Inventor); Zawierucha, Robert (Inventor)

    1994-01-01

    An apparatus comprising a rotatable mass of structured packing for mass or heat transfer between two contacting fluids of different densities wherein the packing mass is made up of corrugated sheets of involute shape relative to the axis of the packing mass and form a logarithmic spiral curved counter to the direction of rotation.

  8. [Contact allergies in musicians].

    PubMed

    Gasenzer, E R; Neugebauer, E A M

    2012-12-01

    During the last years, the problem of allergic diseases has increased. Allergies are errant immune responses to a normally harmless substance. In musicians the allergic contact dermatitis to exotic woods is a special problem. Exotic rosewood contains new flavonoids, which trigger an allergic reaction after permanent contact with the instrument. High quality woodwind instruments such as baroque flute or clarinets are made in ebony or palisander because of its great sound. Today instruments for non-professional players are also made in these exotic materials and non-professionals may have the risk to develop contact dermatitis, too. Brass-player has the risk of an allergic reaction to the different metals contained in the metal sheets of modern flutes and brass instruments. Specially nickel and brass alloys are used to product flute tubes or brass instruments. Special problem arises in children: patients who are allergic to plants or foods have a high risk to develop contact dermatitis. Parents don't know the materials of low-priced instruments for beginners. Often unknown cheap woods from exotic areas are used. Low-priced brass instruments contain high amount of brass and other cheap metals. Physicians should advice musician-patients or parents about the risks of the different materials and look for the reason of eczema on mouth, face, or hands.

  9. Contact: Releasing the news

    NASA Astrophysics Data System (ADS)

    Pinotti, Roberto

    The problem of mass behavior after man's future contacts with other intelligences in the universe is not only a challenge for social scientists and political leaders all over the world, but also a cultural time bomb as well. In fact, since the impact of CETI (Contact with Extraterrestrial Intelligence) on human civilization, with its different cultures, might cause a serious socio-anthropological shock, a common and predetermined worldwide strategy is necessary in releasing the news after the contact, in order to keep possible manifestations of fear, panic and hysteria under control. An analysis of past studies in this field and of parallel historical situations as analogs suggests a definite "authority crisis" in the public as a direct consequence of an unexpected release of the news, involving a devastating "chain reaction" process (from both the psychological and sociological viewpoints) of anomie and maybe the collapse of today's society. The only way to prevent all this is to prepare the world's public opinion concerning contact before releasing the news, and to develop a long-term strategy through the combined efforts of scientists, political leaders, intelligence agencies and the mass media, in order to create the cultural conditions in which a confrontation with ETI won't affect mankind in a traumatic way. Definite roles and tasks in this multi-level model are suggested.

  10. D-branes on AdS flux compactifications

    NASA Astrophysics Data System (ADS)

    Koerber, Paul; Martucci, Luca

    2008-01-01

    We study D-branes in Script N = 1 flux compactifications to AdS4. We derive their supersymmetry conditions and express them in terms of background generalized calibrations. Basically because AdS has a boundary, the analysis of stability is more subtle and qualitatively different from the usual case of Minkowski compactifications. For instance, stable D-branes filling AdS4 may wrap trivial internal cycles. Our analysis gives a geometric realization of the four-dimensional field theory approach of Freedman and collaborators. Furthermore, the one-to-one correspondence between the supersymmetry conditions of the background and the existence of generalized calibrations for D-branes is clarified and extended to any supersymmetric flux background that admits a time-like Killing vector and for which all fields are time-independent with respect to the associated time. As explicit examples, we discuss supersymmetric D-branes on IIA nearly Kähler AdS4 flux compactifications.

  11. Dyonic AdS black holes from magnetohydrodynamics

    NASA Astrophysics Data System (ADS)

    Caldarelli, Marco M.; Dias, Óscar J. C.; Klemm, Dietmar

    2009-03-01

    We use the AdS/CFT correspondence to argue that large dyonic black holes in anti-de Sitter spacetime are dual to stationary solutions of the equations of relativistic magnetohydrodynamics on the conformal boundary of AdS. The dyonic Kerr-Newman-AdS4 solution corresponds to a charged diamagnetic fluid not subject to any net Lorentz force, due to orthogonal magnetic and electric fields compensating each other. The conserved charges, stress tensor and R-current of the fluid are shown to be in exact agreement with the corresponding quantities of the black hole. Furthermore, we obtain stationary solutions of the Navier-Stokes equations in four dimensions, which yield predictions for (yet to be constructed) charged rotating black strings in AdS5 carrying nonvanishing momentum along the string. Finally, we consider Scherk-Schwarz reduced AdS gravity on a circle. In this theory, large black holes and black strings are dual to lumps of deconfined plasma of the associated CFT. We analyze the effects that a magnetic field introduces in the Rayleigh-Plateau instability of a plasma tube, which is holographically dual to the Gregory-Laflamme instability of a magnetically charged black string.

  12. AdS Branes from Partial Breaking of Superconformal Symmetries

    SciTech Connect

    Ivanov, E.A.

    2005-10-01

    It is shown how the static-gauge world-volume superfield actions of diverse superbranes on the AdS{sub d+1} superbackgrounds can be systematically derived from nonlinear realizations of the appropriate AdS supersymmetries. The latter are treated as superconformal symmetries of flat Minkowski superspaces of the bosonic dimension d. Examples include the N = 1 AdS{sub 4} supermembrane, which is associated with the 1/2 partial breaking of the OSp(1|4) supersymmetry down to the N = 1, d = 3 Poincare supersymmetry, and the T-duality related L3-brane on AdS{sub 5} and scalar 3-brane on AdS{sub 5} x S{sup 1}, which are associated with two different patterns of 1/2 breaking of the SU(2, 2|1) supersymmetry. Another (closely related) topic is the AdS/CFT equivalence transformation. It maps the world-volume actions of the codimension-one AdS{sub d+1} (super)branes onto the actions of the appropriate Minkowski (super)conformal field theories in the dimension d.

  13. Worldsheet dilatation operator for the AdS superstring

    NASA Astrophysics Data System (ADS)

    Ramírez, Israel; Vallilo, Brenno Carlini

    2016-05-01

    In this work we propose a systematic way to compute the logarithmic divergences of composite operators in the pure spinor description of the AdS 5 × S 5 superstring. The computations of these divergences can be summarized in terms of a dilatation operator acting on the local operators. We check our results with some important composite operators of the formalism.

  14. Entanglement temperature and perturbed AdS3 geometry

    NASA Astrophysics Data System (ADS)

    Levine, G. C.; Caravan, B.

    2016-06-01

    Generalizing the first law of thermodynamics, the increase in entropy density δ S (x ) of a conformal field theory (CFT) is proportional to the increase in energy density, δ E (x ) , of a subsystem divided by a spatially dependent entanglement temperature, TE(x ) , a fixed parameter determined by the geometry of the subsystem, crossing over to thermodynamic temperature at high temperatures. In this paper we derive a generalization of the thermodynamic Clausius relation, showing that deformations of the CFT by marginal operators are associated with spatial temperature variations, δ TE(x ) , and spatial energy correlations play the role of specific heat. Using AdS/CFT duality we develop a relationship between a perturbation in the local entanglement temperature of the CFT and the perturbation of the bulk AdS metric. In two dimensions, we demonstrate a method through which direct diagonalizations of the boundary quantum theory may be used to construct geometric perturbations of AdS3 .

  15. Direct-contact heat exchanger

    NASA Astrophysics Data System (ADS)

    Bricard, A.

    The working principle of direct contact heat exchanger, where heat transfer takes place between two immiscible fluids coming into direct contact, is described. Typical direct contact devices are outlined. A better understanding of the principles involved and the development of computational models for multiphase subsytems are concluded as stimulus for direct contact heat and mass transfer applications.

  16. Contact Graph Routing

    NASA Technical Reports Server (NTRS)

    Burleigh, Scott C.

    2011-01-01

    Contact Graph Routing (CGR) is a dynamic routing system that computes routes through a time-varying topology of scheduled communication contacts in a network based on the DTN (Delay-Tolerant Networking) architecture. It is designed to enable dynamic selection of data transmission routes in a space network based on DTN. This dynamic responsiveness in route computation should be significantly more effective and less expensive than static routing, increasing total data return while at the same time reducing mission operations cost and risk. The basic strategy of CGR is to take advantage of the fact that, since flight mission communication operations are planned in detail, the communication routes between any pair of bundle agents in a population of nodes that have all been informed of one another's plans can be inferred from those plans rather than discovered via dialogue (which is impractical over long one-way-light-time space links). Messages that convey this planning information are used to construct contact graphs (time-varying models of network connectivity) from which CGR automatically computes efficient routes for bundles. Automatic route selection increases the flexibility and resilience of the space network, simplifying cross-support and reducing mission management costs. Note that there are no routing tables in Contact Graph Routing. The best route for a bundle destined for a given node may routinely be different from the best route for a different bundle destined for the same node, depending on bundle priority, bundle expiration time, and changes in the current lengths of transmission queues for neighboring nodes; routes must be computed individually for each bundle, from the Bundle Protocol agent's current network connectivity model for the bundle s destination node (the contact graph). Clearly this places a premium on optimizing the implementation of the route computation algorithm. The scalability of CGR to very large networks remains a research topic

  17. Effective Ad-Hoc Committees.

    ERIC Educational Resources Information Center

    Young, David G.

    1983-01-01

    Ad-hoc committees may be symbolic, informational, or action committees. A literature survey indicates such committees' structural components include a suprasystem and three subsystems involving linkages, production, and implementation. Other variables include size, personal factors, and timing. All the factors carry implications about ad-hoc…

  18. Lorentzian AdS geometries, wormholes, and holography

    SciTech Connect

    Arias, Raul E.; Silva, Guillermo A.; Botta Cantcheff, Marcelo

    2011-03-15

    We investigate the structure of two-point functions for the quantum field theory dual to an asymptotically Lorentzian Anti de Sitter (AdS) wormhole. The bulk geometry is a solution of five-dimensional second-order Einstein-Gauss-Bonnet gravity and causally connects two asymptotically AdS spacetimes. We revisit the Gubser-Klebanov-Polyakov-Witten prescription for computing two-point correlation functions for dual quantum field theories operators O in Lorentzian signature and we propose to express the bulk fields in terms of the independent boundary values {phi}{sub 0}{sup {+-}} at each of the two asymptotic AdS regions; along the way we exhibit how the ambiguity of normalizable modes in the bulk, related to initial and final states, show up in the computations. The independent boundary values are interpreted as sources for dual operators O{sup {+-}} and we argue that, apart from the possibility of entanglement, there exists a coupling between the degrees of freedom living at each boundary. The AdS{sub 1+1} geometry is also discussed in view of its similar boundary structure. Based on the analysis, we propose a very simple geometric criterion to distinguish coupling from entanglement effects among two sets of degrees of freedom associated with each of the disconnected parts of the boundary.

  19. One-loop diagrams in AdS space

    SciTech Connect

    Hung Lingyan; Shang Yanwen

    2011-01-15

    We study the complex scalar loop corrections to the boundary-boundary gauge two-point function in pure AdS space in Poincare coordinates, in the presence of boundary quadratic perturbations to the scalar. These perturbations correspond to double-trace perturbations in the dual CFT and modify the boundary conditions of the bulk scalars in AdS. We find that, in addition to the usual UV divergences, the one-loop calculation suffers from a divergence originating in the limit as the loop vertices approach the AdS horizon. We show that this type of divergence is independent of the boundary coupling; making use of this we extract the finite relative variation of the imaginary part of the loop via Cutkosky rules as the boundary perturbation varies. Applying our methods to compute the effects of a time-dependent impurity to the conductivities using the replica trick in AdS/CFT, we find that generally an IR-relevant disorder reduces the conductivity and that in the extreme low frequency limit the correction due to the impurities overwhelms the planar CFT result even though it is supposedly 1/N{sup 2} suppressed. We also comment on the more physical scenario of a time-independent impurity.

  20. [Contact dermatitis from Agave americana].

    PubMed

    de la Cueva, Pablo; González-Carrascosa, Mateo; Campos, Minia; Leis, Vicente; Suárez, Ricardo; Lázaro, Pablo

    2005-10-01

    Numerous plant species and their derivatives can cause skin reactions through a variety of mechanisms: irritative contact dermatitis, allergic contact dermatitis, contact urticaria and photodermatitis. We present a case of irritative contact dermatitis after exposure to the sap of Agave americana. The skin symptoms in this case have only been described on rare occasions; although this condition usually presents with a papulovesicular rash, in this patient it appeared as purpuric lesions in the contact area.