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Sample records for aircraft airworthiness standards

  1. 77 FR 58301 - Technical Amendment; Airworthiness Standards: Aircraft Engines; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-20

    .... SUMMARY: The FAA is correcting a technical amendment published on July 5, 2012 (77 FR 39623). In that... Technical Amendment entitled, ``Airworthiness Standards: Aircraft Engine'' (77 FR 39623). In that technical... Administration 14 CFR Part 33 RIN 2120-AF57 Technical Amendment; Airworthiness Standards: Aircraft...

  2. Program plan to develop airworthiness standards for STOL aircraft

    NASA Technical Reports Server (NTRS)

    Cayot, J. E.; Chubboy, R. A.; Hynes, C. S.

    1972-01-01

    A program plan to develop criteria for airworthiness standards for STOL transport aircraft is presented. Initially, three different STOL concepts are to be examined with a goal to arrive at a generalized set of standards. The Breguet 941 deflected-slipstream STOL has been initially evaluated on a piloted motion simulator and in flight. Confidence in establishing criteria for airworthiness standards for STOL transport aircraft has been obtained from these studies.

  3. 77 FR 39623 - Airworthiness Standards: Aircraft Engines; Technical Amendment

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-05

    ... Federal Aviation Administration 14 CFR Part 33 Airworthiness Standards: Aircraft Engines; Technical Amendment AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; technical amendment.... ] DATES: This amendment becomes effective July 5, 2012. FOR FURTHER INFORMATION CONTACT: For...

  4. Considerations of Unmanned Aircraft Classification for Civil Airworthiness Standards

    NASA Technical Reports Server (NTRS)

    Maddalon, Jeffrey M.; Hayhurst, Kelly J.; Morris, A. Terry; Verstynen, Harry A.

    2013-01-01

    The use of unmanned aircraft in the National Airspace System (NAS) has been characterized as the next great step forward in the evolution of civil aviation. Although use of unmanned aircraft systems (UAS) in military and public service operations is proliferating, civil use of UAS remains limited in the United States today. This report focuses on one particular regulatory challenge: classifying UAS to assign airworthiness standards. Classification is useful for ensuring that meaningful differences in design are accommodated by certification to different standards, and that aircraft with similar risk profiles are held to similar standards. This paper provides observations related to how the current regulations for classifying manned aircraft, based on dimensions of aircraft class and operational aircraft categories, could apply to UAS. This report finds that existing aircraft classes are well aligned with the types of UAS that currently exist; however, the operational categories are more difficult to align to proposed UAS use in the NAS. Specifically, the factors used to group manned aircraft into similar risk profiles do not necessarily capture all relevant UAS risks. UAS classification is investigated through gathering approaches to classification from a broad spectrum of organizations, and then identifying and evaluating the classification factors from these approaches. This initial investigation concludes that factors in addition to those currently used today to group manned aircraft for the purpose of assigning airworthiness standards will be needed to adequately capture risks associated with UAS and their operations.

  5. Perspectives on Unmanned Aircraft Classification for Civil Airworthiness Standards

    NASA Technical Reports Server (NTRS)

    Maddalon, Jeffrey M.; Hayhurst, Kelly J.; Koppen, Daniel M.; Upchurch, Jason M.; Morris, A. Terry; Verstynen, Harry A.

    2013-01-01

    The use of unmanned aircraft in the National Airspace System (NAS) has been characterized as the next great step forward in the evolution of civil aviation. Although use of unmanned aircraft systems (UAS) in military and public service operations is proliferating, civil use of UAS remains limited in the United States today. This report focuses on one particular regulatory challenge: classifying UAS to assign airworthiness standards. This paper provides observations related to how the current regulations for classifying manned aircraft could apply to UAS.

  6. 14 CFR 91.205 - Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 2 2014-01-01 2014-01-01 false Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and equipment requirements. 91.205 Section 91.205 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR TRAFFIC AND GENERAL OPERATING RULES GENERAL...

  7. 14 CFR 91.205 - Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 2 2012-01-01 2012-01-01 false Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and equipment requirements. 91.205 Section 91.205 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION (CONTINUED) AIR TRAFFIC AND GENERAL OPERATING RULES GENERAL...

  8. The effect of a single standard of engineering safety (S3E) on the airworthiness of military derivative aircraft

    NASA Astrophysics Data System (ADS)

    Lasaxon, Victor Manuel

    Scope and method of study. The purpose of this experimental study was to examine the effects of applying a single standard of engineering safety (S3E) on the airworthiness of military derivative aircraft. For the purpose of this study, S3E is defined as the use of commercial standards for airworthiness in embodied in Federal Aviation Regulation (FAR) 121 and Federal Aviation Administration (FAA) Order 8300.10, then tailored and applied to the Department of Defense (DOD). Using a S3E audit normally used to inspect airlines but specially tailored to the military two randomly selected military units were pre-tested. Although the random selection was blind to the study it is known that the units were of different services but operated the same type of commercially built and certified military derivative aircraft. It is also known that their force of strength and fleet size were the same. After the pre-test, one unit was treated by exposure to S3E commercial standards for airworthiness per FAR Part 121 and FAA Order 8300.10 and the other unit was not. After 90 days, both units were post-tested. Percent change comparison on the pre and post test as well as the chi squared technique was used to analyze the data. Findings and conclusions. The results of the study indicate that the treated unit experienced significant improvement in airworthiness compliance and the control unit did not. It was concluded that S3E had a positive effect in this first of its kind study, but further and expanded research needs to continue.

  9. System level airworthiness tool: A comprehensive approach to small unmanned aircraft system airworthiness

    NASA Astrophysics Data System (ADS)

    Burke, David A.

    One of the pillars of aviation safety is assuring sound engineering practices through airworthiness certification. As Unmanned Aircraft Systems (UAS) grow in popularity, the need for airworthiness standards and verification methods tailored for UAS becomes critical. While airworthiness practices for large UAS may be similar to manned aircraft, it is clear that small UAS require a paradigm shift from the airworthiness practices of manned aircraft. Although small in comparison to manned aircraft these aircraft are not merely remote controlled toys. Small UAS may be complex aircraft flying in the National Airspace System (NAS) over populated areas for extended durations and beyond line of sight of the operators. A comprehensive systems engineering framework for certifying small UAS at the system level is needed. This work presents a point based tool that evaluates small UAS by rewarding good engineering practices in design, analysis, and testing. The airworthiness requirements scale with vehicle size and operational area, while allowing flexibility for new technologies and unique configurations.

  10. 14 CFR 91.7 - Civil aircraft airworthiness.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 2 2011-01-01 2011-01-01 false Civil aircraft airworthiness. 91.7 Section... aircraft airworthiness. (a) No person may operate a civil aircraft unless it is in an airworthy condition. (b) The pilot in command of a civil aircraft is responsible for determining whether that aircraft...

  11. 14 CFR 91.7 - Civil aircraft airworthiness.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 2 2013-01-01 2013-01-01 false Civil aircraft airworthiness. 91.7 Section... aircraft airworthiness. (a) No person may operate a civil aircraft unless it is in an airworthy condition. (b) The pilot in command of a civil aircraft is responsible for determining whether that aircraft...

  12. 14 CFR 91.7 - Civil aircraft airworthiness.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 2 2012-01-01 2012-01-01 false Civil aircraft airworthiness. 91.7 Section... aircraft airworthiness. (a) No person may operate a civil aircraft unless it is in an airworthy condition. (b) The pilot in command of a civil aircraft is responsible for determining whether that aircraft...

  13. 14 CFR 91.7 - Civil aircraft airworthiness.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 2 2014-01-01 2014-01-01 false Civil aircraft airworthiness. 91.7 Section... aircraft airworthiness. (a) No person may operate a civil aircraft unless it is in an airworthy condition. (b) The pilot in command of a civil aircraft is responsible for determining whether that aircraft...

  14. 14 CFR 91.7 - Civil aircraft airworthiness.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Civil aircraft airworthiness. 91.7 Section... aircraft airworthiness. (a) No person may operate a civil aircraft unless it is in an airworthy condition. (b) The pilot in command of a civil aircraft is responsible for determining whether that aircraft...

  15. 76 FR 55553 - Airworthiness Standards; Rotor Overspeed Requirements; Correction

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-08

    ... Requirements, published on July 18, 2011 (76 FR 42020). The final rule established uniform rotor overspeed... Overspeed Requirements'' (76 FR 42022). The final rule revised the aircraft turbine engine rotor overspeed... Administration 14 CFR Part 33 RIN 2120-AJ62 Airworthiness Standards; Rotor Overspeed Requirements;...

  16. 78 FR 56150 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-12

    ... final rule is effective September 12, 2013. The effective date for AD 2013-13-01 (78 FR 41277, July 10... . SUPPLEMENTARY INFORMATION: Airworthiness Directive 2013-13-01, Amendment 39-17489 (78 FR 41277, July 10, 2013...-018-AD; Amendment 39-17489; AD 2013-13-01] RIN 2120-AA64 Airworthiness Directives; Piper Aircraft,...

  17. 77 FR 34281 - Airworthiness Directives; Schweizer Aircraft Corporation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-11

    ...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Schweizer Aircraft...). SUMMARY: This document proposes to adopt a new airworthiness directive (AD) for Schweizer...

  18. 14 CFR 31.82 - Instructions for Continued Air-worthiness.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS Operating Limitations and Information § 31... delivery of the first balloon or issuance of a standard certificate of airworthiness, whichever...

  19. 76 FR 48047 - Airworthiness Directives; Diamond Aircraft Industries Powered Sailplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-08

    ... Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic impact, positive or... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Diamond Aircraft... directive (AD) for Diamond Aircraft Industries Model H-36 ``DIMONA'' powered sailplanes. This proposed...

  20. 77 FR 68058 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-15

    ... Order 12866; 2. Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034...-062-AD; Amendment 39-17251; AD 2012-22-14] RIN 2120-AA64 Airworthiness Directives; Sikorsky Aircraft... Aircraft Corporation (Sikorsky) Model S-70, S-70A, S-70C, S-70C(M), and S-70C(M1) helicopters with...

  1. 78 FR 24689 - Airworthiness Directives; PILATUS Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-26

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... airworthiness directive (AD) for all PILATUS Aircraft Ltd. Model PC-7 airplanes. This proposed AD results from... Pilatus PC-7 AMM report no. 01715 revision 31 dated 30 November 2012 to incorporate a 300 Flight Hour...

  2. 76 FR 82205 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-30

    ... TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Cessna Aircraft Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4)...

  3. Improving aircraft composite inspections using optimized reference standards

    SciTech Connect

    Roach, D.; Dorrell, L.; Kollgaard, J.; Dreher, T.

    1998-10-01

    The rapidly increasing use of composites on commercial airplanes coupled with the potential for economic savings associated with their use in aircraft structures means that the demand for composite materials technology will continue to increase. Inspecting these composite structures is a critical element in assuring this continued airworthiness. The FAA`s Airworthiness Assurance NDI Validation Center, in conjunction with the Commercial Aircraft Composite Repair committee, is developing a set of composite reference standards to be used in NDT equipment calibration for accomplishment of damage assessment and post-repair inspection of all commercial aircraft composites. In this program, a series of NDI tests on a matrix of composite aircraft structures and prototype reference standards were completed in order to minimize the number of standards needed to carry out composite inspections on aircraft. Two tasks, related to composite laminates and non-metallic composite honeycomb configurations, were addressed.

  4. Airworthiness criteria development for powered-lift aircraft: A program summary

    NASA Technical Reports Server (NTRS)

    Heffley, R. K.; Stapleford, R. L.; Rumold, R. C.

    1977-01-01

    A four-year simulation program to develop airworthiness criteria for powered-lift aircraft is summarized. All flight phases affected by use of powered lift (approach, landing, takeoff) are treated with regard to airworthiness problem areas (limiting flight conditions and safety margins: stability, control, and performance; and systems failure). The general features of powered-lift aircraft are compared to conventional aircraft.

  5. 14 CFR 21.184 - Issue of special airworthiness certificates for primary category aircraft.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Issue of special airworthiness certificates for primary category aircraft. 21.184 Section 21.184 Aeronautics and Space FEDERAL AVIATION... Airworthiness Certificates § 21.184 Issue of special airworthiness certificates for primary category...

  6. 77 FR 21420 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-10

    ...We are adopting a new airworthiness directive (AD) for certain Cessna Aircraft Company Model 680 airplanes. This AD was prompted by a false cross-feed command to the right-hand fuel control card, due to the cross-feed inputs on the left- and right-hand fuel control cards being connected together and causing an imbalance of fuel between the left and right wing tanks. This AD requires adding......

  7. 14 CFR 21.189 - Issue of airworthiness certificate for limited category aircraft.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Issue of airworthiness certificate for limited category aircraft. 21.189 Section 21.189 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... Certificates § 21.189 Issue of airworthiness certificate for limited category aircraft. (a) An applicant for...

  8. 14 CFR 21.185 - Issue of airworthiness certificates for restricted category aircraft.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Issue of airworthiness certificates for restricted category aircraft. 21.185 Section 21.185 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION... Certificates § 21.185 Issue of airworthiness certificates for restricted category aircraft. Link to...

  9. 78 FR 32081 - Airworthiness Directives; Aircraft Industries a.s. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-29

    ... (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will not...-011-AD; Amendment 39-17462; AD 2013-11-02] RIN 2120-AA64 Airworthiness Directives; Aircraft Industries... comments. SUMMARY: We are adopting a new airworthiness directive (AD) for Aircraft Industries a.s. Model...

  10. 14 CFR 21.190 - Issue of a special airworthiness certificate for a light-sport category aircraft.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... certificate for a light-sport category aircraft. 21.190 Section 21.190 Aeronautics and Space FEDERAL AVIATION... Airworthiness Certificates § 21.190 Issue of a special airworthiness certificate for a light-sport category aircraft. (a) Purpose. The FAA issues a special airworthiness certificate in the light-sport category...

  11. 14 CFR 21.190 - Issue of a special airworthiness certificate for a light-sport category aircraft.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... certificate for a light-sport category aircraft. 21.190 Section 21.190 Aeronautics and Space FEDERAL AVIATION... Airworthiness Certificates § 21.190 Issue of a special airworthiness certificate for a light-sport category aircraft. (a) Purpose. The FAA issues a special airworthiness certificate in the light-sport category...

  12. 14 CFR 21.190 - Issue of a special airworthiness certificate for a light-sport category aircraft.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... certificate for a light-sport category aircraft. 21.190 Section 21.190 Aeronautics and Space FEDERAL AVIATION... Airworthiness Certificates § 21.190 Issue of a special airworthiness certificate for a light-sport category aircraft. (a) Purpose. The FAA issues a special airworthiness certificate in the light-sport category...

  13. 14 CFR 21.190 - Issue of a special airworthiness certificate for a light-sport category aircraft.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... certificate for a light-sport category aircraft. 21.190 Section 21.190 Aeronautics and Space FEDERAL AVIATION... Airworthiness Certificates § 21.190 Issue of a special airworthiness certificate for a light-sport category aircraft. (a) Purpose. The FAA issues a special airworthiness certificate in the light-sport category...

  14. 14 CFR 21.190 - Issue of a special airworthiness certificate for a light-sport category aircraft.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... certificate for a light-sport category aircraft. 21.190 Section 21.190 Aeronautics and Space FEDERAL AVIATION... Airworthiness Certificates § 21.190 Issue of a special airworthiness certificate for a light-sport category aircraft. (a) Purpose. The FAA issues a special airworthiness certificate in the light-sport category...

  15. 76 FR 4226 - Airworthiness Directives; Aircraft Industries a.s. Model L 23 Super Blanik Sailplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-25

    ...-073-AD; Amendment 39-16581; AD 2011-02-08] RIN 2120-AA64 Airworthiness Directives; Aircraft Industries... Federal holidays. For service information identified in this AD, contact Aircraft Industries, a.s.-Na... Information Aircraft Industries a.s. has issued LET Aircraft Industries Mandatory Bulletin No.:...

  16. 14 CFR 21.339 - Special export airworthiness approval for aircraft.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... airworthiness lists as an exception any difference between the aircraft to be exported and its type design. § 21..., propeller, or article that is manufactured under this part if it conforms to its approved design and is in a... exported and its approved design. (c) A person may obtain from the FAA an export airworthiness approval...

  17. 75 FR 52292 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-25

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Diamond Aircraft... new airworthiness directive (AD) for all Diamond Aircraft Industries GmbH Models DA 40 and DA...

  18. 76 FR 66207 - Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Model S-92A Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-26

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Model S-92A Helicopters AGENCY: Federal Aviation Administration, DOT. ACTION: Notice of...: John Coffey, Aviation Safety Engineer, Boston Aircraft Certification Office, 12 New England...

  19. 14 CFR Appendix A to Part 33 - Instructions for Continued Airworthiness

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Instructions for Continued Airworthiness A Appendix A to Part 33 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: AIRCRAFT ENGINES Pt. 33, App. A Appendix A to Part 33—Instructions for Continued Airworthiness a33.1general...

  20. 76 FR 69123 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-08

    ... . SUPPLEMENTARY INFORMATION: Airworthiness Directive 2009-10-09 R2, Amendment 39-16782 (76 FR 53308, August 26... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION...-030-AD; Amendment 39-16782; AD 2009-10-09 R2] RIN 2120-AA64 Airworthiness Directives; Cessna...

  1. 14 CFR 91.327 - Aircraft having a special airworthiness certificate in the light-sport category: Operating...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... certificate in the light-sport category: Operating limitations. 91.327 Section 91.327 Aeronautics and Space... special airworthiness certificate in the light-sport category: Operating limitations. (a) No person may operate an aircraft that has a special airworthiness certificate in the light-sport category...

  2. 14 CFR 91.327 - Aircraft having a special airworthiness certificate in the light-sport category: Operating...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... certificate in the light-sport category: Operating limitations. 91.327 Section 91.327 Aeronautics and Space... special airworthiness certificate in the light-sport category: Operating limitations. (a) No person may operate an aircraft that has a special airworthiness certificate in the light-sport category...

  3. 14 CFR 91.327 - Aircraft having a special airworthiness certificate in the light-sport category: Operating...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... certificate in the light-sport category: Operating limitations. 91.327 Section 91.327 Aeronautics and Space... special airworthiness certificate in the light-sport category: Operating limitations. (a) No person may operate an aircraft that has a special airworthiness certificate in the light-sport category...

  4. 14 CFR 91.327 - Aircraft having a special airworthiness certificate in the light-sport category: Operating...

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... certificate in the light-sport category: Operating limitations. 91.327 Section 91.327 Aeronautics and Space... special airworthiness certificate in the light-sport category: Operating limitations. (a) No person may operate an aircraft that has a special airworthiness certificate in the light-sport category...

  5. 14 CFR 91.327 - Aircraft having a special airworthiness certificate in the light-sport category: Operating...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... certificate in the light-sport category: Operating limitations. 91.327 Section 91.327 Aeronautics and Space... special airworthiness certificate in the light-sport category: Operating limitations. (a) No person may operate an aircraft that has a special airworthiness certificate in the light-sport category...

  6. 75 FR 32251 - Airworthiness Directives; PILATUS Aircraft Ltd. Model PC-7 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-08

    ... products. That NPRM was published in the Federal Register on March 15, 2010 (75 FR 12150). That NPRM... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a significant...; AD 2010-12-04] RIN 2120-AA64 Airworthiness Directives; PILATUS Aircraft Ltd. Model PC-7...

  7. 75 FR 66700 - Airworthiness Directives; Cessna Aircraft Company (Cessna) Model 402C Airplanes Modified by...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-29

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... ``Docket No. FAA-2010-1084; Directorate Identifier 2010-CE-056-AD'' at the beginning of your comments. We... following new airworthiness directive (AD): Cessna Aircraft Company: Docket No. FAA-2010-1084;...

  8. 76 FR 81790 - Airworthiness Standards: Transport Category Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-29

    ... From the Federal Register Online via the Government Publishing Office FEDERAL AVIATION ADMINISTRATION 14 CFR Part 25 Airworthiness Standards: Transport Category Airplanes CFR Correction In Title 14 of the Code of Federal Regulations, Parts 1 to 59, revised as of January 1, 2011, on page 413, in Sec....

  9. 78 FR 12254 - Interest in Restructure of Rotorcraft Airworthiness Standards

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-22

    ... Privacy Act Statement can be found in the Federal Register published on April 11, 2000 (65 FR 19477-19478... rotorcraft airworthiness standards more efficient and adaptable to future technology. This action is part of... recognized that the evolution of the part 27 and 29 rules has not kept pace with technology and...

  10. 14 CFR 36.3 - Compatibility with airworthiness requirements.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Compatibility with airworthiness requirements. 36.3 Section 36.3 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT NOISE STANDARDS: AIRCRAFT TYPE AND AIRWORTHINESS CERTIFICATION General §...

  11. 78 FR 14729 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-07

    ... proposed AD. Discussion On December 28, 2010, we issued AD 2011-01-14, Amendment 39-16571 (76 FR 5647... above. Since we issued AD 2011-01-14, (76 FR 5647; February 1, 2011), the airworthiness limitations of... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3)...

  12. 78 FR 67011 - Airworthiness Directives; PILATUS Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-08

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), ] (3.... Model PC-7 airplanes. This AD results from mandatory continuing airworthiness information (MCAI) issued... PC-7 Service Bulletin No. 24-009, dated September 6, 2013. The actions described in this...

  13. 78 FR 54561 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-05

    ... effective September 5, 2013. The effective date for AD 2013-10-04 (78 FR 35110, June 12, 2013) remains July... INFORMATION: Airworthiness Directive 2013-10-04 (78 FR 35110, June 12, 2013), currently requires a detailed... incorrect model/part number for the Model PA-31-350, tail pipe assembly, top. This document corrects...

  14. 78 FR 25363 - Airworthiness Directives; Diamond Aircraft Industries Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-01

    ...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect... Industries Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule; request for... DA 40 NG airplanes. This AD results from mandatory continuing airworthiness information (MCAI)...

  15. 77 FR 23382 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-19

    ... INFORMATION: Discussion On October 26, 2011, at 76 FR 66207, the Federal Register published our Notice of... Policies and Procedures (44 FR 11034, February 26, 1979); (3) Will not affect intrastate aviation in Alaska...-011-AD; Amendment 39-17017; AD 2012-08-01] RIN 2120-AA64 Airworthiness Directives; Sikorsky...

  16. 77 FR 67561 - Airworthiness Directives; Univair Aircraft Corporation Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-13

    ... correction is effective November 13, 2012. The effective date of AD 2012-08-06, amendment 39-17023 (77 FR....caldwell@faa.gov . SUPPLEMENTARY INFORMATION: Airworthiness Directive 2012-08-06, amendment 39-17023 (77 FR... 2012-08-06; Amendment 39-17023 (77 FR 52205, August 29, 2012) is corrected as follows: On page...

  17. 14 CFR 39.23 - May I fly my aircraft to a repair facility to do the work required by an airworthiness directive?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false May I fly my aircraft to a repair facility to do the work required by an airworthiness directive? 39.23 Section 39.23 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES §...

  18. 76 FR 40219 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-08

    ...We are adopting a new airworthiness directive (AD) for the products listed above that will supersede an existing AD. This AD results from mandatory continuing airworthiness information (MCAI) issued by the aviation authority of another country to identify and correct an unsafe condition on an aviation product. The MCAI describes the unsafe condition...

  19. 75 FR 52860 - Final Airworthiness Design Standards for Acceptance Under the Primary Category Rule; Orlando...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-30

    ... Register on June 21, 2010, 75 FR 34953. No comments were received, and the airworthiness design standards... Under the Primary Category Rule; Orlando Helicopter Airways (OHA), Inc., Models Cessna 172I, 172K, 172L... Proposed Airworthiness Design Standards for Acceptance Under the Primary Category Rule; Orlando...

  20. Proceedings of the FAA-NASA Symposium on the Continued Airworthiness of Aircraft Structures. Volume 1

    NASA Technical Reports Server (NTRS)

    Bigelow, Catherine A. (Compiler)

    1997-01-01

    This publication contains the fifty-two technical papers presented at the FAA-NASA Symposium on the Continued Airworthiness of Aircraft Structures. The symposium, hosted by the FAA Center of Excellence for Computational Modeling of Aircraft Structures at Georgia Institute of Technology, was held to disseminate information on recent developments in advanced technologies to extend the life of high-time aircraft and design longer-life aircraft. Affiliations of the participants included 33% from government agencies and laboratories, 19% from academia, and 48% from industry; in all 240 people were in attendance. Technical papers were selected for presentation at the symposium, after a review of extended abstracts received by the Organizing Committee from a general call for papers.

  1. Proceedings of the FAA-NASA Symposium on the Continued Airworthiness of Aircraft Structures. Volume 2

    NASA Technical Reports Server (NTRS)

    Bigelow, Catherine A. (Compiler)

    1997-01-01

    This publication contains the fifty-two technical papers presented at the FAA-NASA Symposium on the Continued Airworthiness of Aircraft Structures. The symposium, hosted by the FAA Center of Excellence for Computational Modeling of Aircraft Structures at Georgia Institute of Technology, was held to disseminate information on recent developments in advanced technologies to extend the life of high-time aircraft and design longer-life aircraft. Affiliations of the participants included 33% from government agencies and laboratories, 19% from academia, and 48% from industry; in all 240 people were in attendance. Technical papers were selected for presentation at the symposium, after a review of extended abstracts received by the Organizing Committee from a general call for papers.

  2. 77 FR 33083 - Airworthiness Directives; WACO Classic Aircraft Corporation Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-05

    ... (accumulative cost 7,820. for all four spar assemblies). Authority for This Rulemaking Title 49 of the United... Executive Order 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR... aircraft, (5) Hours TIS of aircraft, (6) Description of failure if applicable, (7) Part(s) and part...

  3. 76 FR 53308 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-08-26

    ..., amendment 39-16074 (74 FR 57408, November 6, 2009), for certain Cessna Aircraft Company (Cessna) Models 150F... 2009-10-09 R1, Amendment 39-16074 (74 FR 57408, November 6, 2009); Cessna Aircraft Company Service... elevator. Actions Since AD Was Issued Since we issued AD 2009-10-09 R1 (74 FR 57408, November 6,...

  4. Environmental protection agency aircraft emissions standards

    NASA Technical Reports Server (NTRS)

    Kittredge, G. D.

    1977-01-01

    Emissions of air pollutants from aircraft were investigated in order to determine: (1) the extent to which such emissions affect air quality in air quality control regions throughout the United States; and (2) the technological feasibility of controlling such emissions. The basic information supporting the need for aircraft emissions standards is summarized. The EPA ambient air quality standards are presented. Only the primary (health related) standards are shown. Of the six pollutants, only the first three, carbon monoxide (CO), hydrocarbons (HC), and nitrogen oxides, are influenced significantly by aircraft.

  5. 76 FR 67346 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-01

    ... 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034... operators of these airplanes. This AD requires replacing certain lithium-ion batteries installed as the main... equipped with a lithium-ion battery as the main aircraft battery. We are issuing this AD to correct...

  6. 78 FR 42723 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-17

    ... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation... (AD) for Pilatus Aircraft Ltd. Model PC-12/47E airplanes. This proposed AD results from mandatory... states: During a design review of the electrical supply of navigation equipment installed on certain...

  7. 77 FR 4699 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-31

    ... submitting comments to the NPRM (77 FR 2238, January 17, 2012) remains March 2, 2012. ADDRESSES: You may...), Directorate Identifier 2011-CE-042-AD (77 FR 2238, January 17, 2012), currently proposes to require the... Register. That NPRM applies to certain Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350,...

  8. 77 FR 50954 - Airworthiness Directives; Cessna Aircraft Company

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-23

    ... Aircraft Corporation). That NPRM published in the Federal Register on October 29, 2010 (75 FR 66700). That NPRM (75 FR 66700, October 29, 2010) was prompted by a report that a Cessna Model 414A airplane, which... configuration. That NPRM (75 FR 66700, October 29, 2010) proposed to require a complete inspection of the...

  9. 78 FR 14640 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-07

    ..., 2012 (77 FR 41937). That NPRM proposed to require inspecting certain logic modules to determine if... presents the comments received on the proposal (77 FR 41937, July 17, 2012) and the FAA's response to each comment. Request To Change Compliance Time Cessna Aircraft Company (Cessna) requested that the NPRM (77...

  10. 77 FR 72250 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-05

    ... Aircraft Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed... receive about this proposed AD. Discussion In January 2012, we issued AD 2012-02-02 (77 FR 6003, February 7, 2012), and in October 2012, we issued AD 2012-22-01 (77 FR 70114, November 23, 2012) for...

  11. 78 FR 4092 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-18

    ... September 11, 2012 (77 FR ] 55770). That NPRM proposed to require you to inspect the aircraft's hydraulic... 12866, the Regulatory Flexibility Act, or DOT Regulatory Policies and Procedures (44 FR 11034, February.... FAA- 2012-0962, published in the Federal Register on September 11, 2012 (77 FR 55770), is...

  12. 77 FR 55770 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-11

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... area of the landing gear's hydraulic power pack system. This proposed AD would require you inspect the aircraft's hydraulic power pack wiring for incorrect installation, and if needed, correct the...

  13. 14 CFR 39.23 - May I fly my aircraft to a repair facility to do the work required by an airworthiness directive?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false May I fly my aircraft to a repair facility... May I fly my aircraft to a repair facility to do the work required by an airworthiness directive? Yes... allow them to fly their aircraft to a repair facility to do the work required by an...

  14. 14 CFR 39.23 - May I fly my aircraft to a repair facility to do the work required by an airworthiness directive?

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 1 2011-01-01 2011-01-01 false May I fly my aircraft to a repair facility... May I fly my aircraft to a repair facility to do the work required by an airworthiness directive? Yes... allow them to fly their aircraft to a repair facility to do the work required by an...

  15. 77 FR 57534 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-18

    ... proposed AD. Discussion On April 7, 1986, AD 82-16-05 R1, amendment 39-5278 (51 FR 11707- 01, April 7, 1986... issued AD 82-16-05 R1 (51 FR 11707-01, April 7, 1986), forced landings of aircraft have occurred due to...-16-05 R1 (51 FR 11707-01, April 7, 1986). This proposed AD would require a detailed...

  16. 77 FR 2238 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-17

    ... (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will not... (AD) for Pilatus Aircraft Ltd. Models PC-6, PC-6-H1, PC-6-H2, PC-6/350, PC-6/ 350-H1, PC-6/350-H2, PC-6/A, PC-6/A-H1, PC-6/A-H2, PC-6/B-H2, PC-6/B1- H2, PC-6/B2-H2, PC-6/B2-H4,......

  17. 76 FR 31465 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-01

    ... Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a significant economic impact, positive or... Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine AGENCY: Federal Aviation Administration... engine, in- flight engine shutdown and forced landing, damage to the aeroplane and injury to...

  18. 78 FR 54385 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-04

    ... not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26...-Ind stria AMT-200 912 A2 Mec nico- Metal rgica Ltda. Diamond Aircraft Industries...... HK 36 R...

  19. 75 FR 32315 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-08

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... Engine model Aeromot-Industria Mecanico AMT-200 912 A2. Metalurgica ltda. Diamond Aircraft...

  20. 75 FR 28504 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-21

    ... Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic... Aircraft model Engine model Aeromot-Industrial Mecanico AMT-200......... 912 A2 Metalurgica tda.....

  1. Airworthiness verification of an airborne telescope in practice

    NASA Astrophysics Data System (ADS)

    Dreger, Hartmut; Bremers, Eckhard; Kuehn, Juergen; Eisentraeger, Peter

    2003-02-01

    The SOFIA Telescope is part of the outer hull of the pressurized passenger cabin of the SOFIA aircraft, in which the aircraft crew, the astronomers and their guests are located during flight. Therefore the telescope - including the science instrument - is an airworthiness relevant component of the observatory and has to fulfill airworthiness standards ac-cording the Federal Aviation Authority. The airworthiness issues were main drivers in the process of design, manufacturing, quality control, testing and documentation. The paper describes the experience gotten during this troublesome, exciting and costly job.

  2. 14 CFR 36.13 - Acoustical change: Tiltrotor aircraft.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Acoustical change: Tiltrotor aircraft. 36... AIRCRAFT NOISE STANDARDS: AIRCRAFT TYPE AND AIRWORTHINESS CERTIFICATION General § 36.13 Acoustical change: Tiltrotor aircraft. The following requirements apply to tiltrotors in any category for which an...

  3. 14 CFR Appendix G to Part 23 - Instructions for Continued Airworthiness

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ..., and work recommended at these periods. However, the applicant may refer to an accessory, instrument... AIRCRAFT AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Pt. 23, App....1529. (b) The Instructions for Continued Airworthiness for each airplane must include the...

  4. 14 CFR Appendix G to Part 23 - Instructions for Continued Airworthiness

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Instructions for Continued Airworthiness G Appendix G to Part 23 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES Pt. 23, App. G Appendix G to Part...

  5. 14 CFR Appendix A to Part 29 - Instructions for Continued Airworthiness

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Instructions for Continued Airworthiness A Appendix A to Part 29 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY ROTORCRAFT Pt. 29, App. A Appendix A to Part 29—Instructions for Continued...

  6. 14 CFR Appendix A to Part 31 - Instructions for Continued Airworthiness

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Instructions for Continued Airworthiness A Appendix A to Part 31 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS Pt. 31, App. A Appendix A to Part 31—Instructions for Continued...

  7. 14 CFR Appendix A to Part 27 - Instructions for Continued Airworthiness

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Instructions for Continued Airworthiness A Appendix A to Part 27 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: NORMAL CATEGORY ROTORCRAFT Pt. 27, App. A Appendix A to Part 27—Instructions for Continued...

  8. 14 CFR Appendix A to Part 35 - Instructions for Continued Airworthiness

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Instructions for Continued Airworthiness A Appendix A to Part 35 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: PROPELLERS Pt. 35, App. A Appendix A to Part 35—Instructions...

  9. Development and utilization of composite honeycomb and solid laminate reference standards for aircraft inspections.

    SciTech Connect

    Roach, Dennis Patrick; Rackow, Kirk A.

    2004-06-01

    The FAA's Airworthiness Assurance NDI Validation Center, in conjunction with the Commercial Aircraft Composite Repair Committee, developed a set of composite reference standards to be used in NDT equipment calibration for accomplishment of damage assessment and post-repair inspection of all commercial aircraft composites. In this program, a series of NDI tests on a matrix of composite aircraft structures and prototype reference standards were completed in order to minimize the number of standards needed to carry out composite inspections on aircraft. Two tasks, related to composite laminates and non-metallic composite honeycomb configurations, were addressed. A suite of 64 honeycomb panels, representing the bounding conditions of honeycomb construction on aircraft, was inspected using a wide array of NDI techniques. An analysis of the resulting data determined the variables that play a key role in setting up NDT equipment. This has resulted in a set of minimum honeycomb NDI reference standards that include these key variables. A sequence of subsequent tests determined that this minimum honeycomb reference standard set is able to fully support inspections over the full range of honeycomb construction scenarios found on commercial aircraft. In the solid composite laminate arena, G11 Phenolic was identified as a good generic solid laminate reference standard material. Testing determined matches in key velocity and acoustic impedance properties, as well as, low attenuation relative to carbon laminates. Furthermore, comparisons of resonance testing response curves from the G11 Phenolic NDI reference standard was very similar to the resonance response curves measured on the existing carbon and fiberglass laminates. NDI data shows that this material should work for both pulse-echo (velocity-based) and resonance (acoustic impedance-based) inspections.

  10. Development of Composite Honeycomb and Solid Laminate Reference Standards to Aid Aircraft Inspections

    SciTech Connect

    Dorrell, L.; Roach, D.

    1999-03-04

    The rapidly increasing use of composites on commercial airplanes coupled with the potential for economic savings associated with their use in aircraft structures means that the demand for composite materials technology will continue to increase. Inspecting these composite structures is a critical element in assuring their continued airworthiness. The FAA's Airworthiness Assurance NDI Validation Center, in conjunction with the Commercial Aircraft Composite Repair Committee (CACRC), is developing a set of composite reference standards to be used in NDT equipment calibration for accomplishment of damage assessment and post-repair inspection of all commercial aircraft composites. In this program, a series of NDI tests on a matrix of composite aircraft structures and prototype reference standards were completed in order to minimize the number of standards needed to carry out composite inspections on aircraft. Two tasks, related to composite laminates and non-metallic composite honeycomb configurations, were addressed. A suite of 64 honeycomb panels, representing the bounding conditions of honeycomb construction on aircraft, were inspected using a wide array of NDI techniques. An analysis of the resulting data determined the variables that play a key role in setting up NDT equipment. This has resulted in a prototype set of minimum honeycomb reference standards that include these key variables. A sequence of subsequent tests determined that this minimum honeycomb reference standard set is able to fully support inspections over the fill range of honeycomb construction scenarios. Current tasks are aimed at optimizing the methods used to engineer realistic flaws into the specimens. In the solid composite laminate arena, we have identified what appears to be an excellent candidate, G11 Phenolic, as a generic solid laminate reference standard material. Testing to date has determined matches in key velocity and acoustic impedance properties, as well as, low attenuation relative

  11. 14 CFR 91.1413 - CAMP: Responsibility for airworthiness.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... Ownership Operations Program Management § 91.1413 CAMP: Responsibility for airworthiness. (a) For aircraft... primarily responsible for the following: (1) Maintaining the airworthiness of the program...

  12. Electromagnetic pulse standards development for military aircraft

    NASA Astrophysics Data System (ADS)

    McClendon, Harold M.; Rodriguez, Manuel J.

    Concepts involved in the system-level standard philosophy adopted by the US Air Force's Aeronautical System Division (ASD) for hardening aircraft systems are presented. ASD's approach is to develop a totally new system-level military electromagnetic pulse (EMP) standard, which will be imposed on prime airframe contractors, and to modify existing electromagnetic interference (EMI) standards (MIL-STD-461 and MIL-STD-462), for subsystem/equipment-level requirements. The system-level standard is in the early stages of development and is scheduled for release in 1989. The changes to MIL-STD-461 and MIL-STD-462 are in the final stages of preparation and should be available for use in late 1987. It is noted that these changes are generic in that they do not specifically reference EMP due to their applicability to other transient environments such as lightning.

  13. 75 FR 70854 - Harmonization of Various Airworthiness Standards for Transport Category Airplanes-Flight Rules

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-19

    ... preamble to Amendment 25- 72, Special Review: Transport Category Airplane Airworthiness Standards (55 FR... complete Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 19477-78) or you... Conditions. In the preamble to that rulemaking (72 FR 44665), the FAA stated that we needed more time...

  14. 78 FR 30795 - Airworthiness Directives; Hamilton Standard Division and Hamilton Sundstrand Corporation Propellers

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-23

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Hamilton Standard Division and Hamilton Sundstrand Corporation Propellers AGENCY: Federal Aviation Administration (FAA),...

  15. 75 FR 34953 - Existence of Proposed Airworthiness Design Standards for Acceptance Under the Primary Category...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-21

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 21 Existence of Proposed Airworthiness Design Standards for Acceptance Under the Primary Category Rule; Orlando Helicopter Airways (OHA), Inc., Models Cessna 172I,...

  16. 75 FR 70074 - Consensus Standards, Light-Sport Aircraft

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-16

    ... Federal Aviation Administration Consensus Standards, Light-Sport Aircraft AGENCY: Federal Aviation... provisions of the Sport Pilot and Light-Sport Aircraft rule issued July 16, 2004, and effective September 1, 2004. ASTM International Committee F37 on Light Sport Aircraft developed the revised standards...

  17. 77 FR 22187 - Technical Amendment; Airworthiness Standards-Aircraft Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-13

    ... endurance tests. None of the changes are substantive in nature, and none will impose any additional burden... errors in Sec. 33.87. None of the corrections are substantive in nature, and none will impose...

  18. 76 FR 45647 - Consensus Standards, Light-Sport Aircraft

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-29

    ... revision process. Background: Under the provisions of the Sport Pilot and Light-Sport Aircraft rule, 69 FR... Federal Aviation Administration Consensus Standards, Light-Sport Aircraft AGENCY: Federal Aviation... to the provisions of the Sport Pilot and Light-Sport Aircraft rule issued July 16, 2004,...

  19. 78 FR 79599 - Airworthiness Directives; Various Aircraft Equipped With Wing Lift Struts

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-31

    ...: Airworthiness Directive 99-01-05 R1, Amendment 39-17688 (78 FR 73997, December 10, 2013), will require... published in the Federal Register on January 16, 2013 (78 FR 3356). No other part of the preamble...

  20. 14 CFR Appendix A to Part 36 - Aircraft Noise Measurement and Evaluation Under § 36.101

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 1 2013-01-01 2013-01-01 false Aircraft Noise Measurement and Evaluation Under § 36.101 A Appendix A to Part 36 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT NOISE STANDARDS: AIRCRAFT TYPE AND AIRWORTHINESS CERTIFICATION Pt. 36, App. A Appendix A to Part 36—Aircraft...

  1. 14 CFR Appendix A to Part 36 - Aircraft Noise Measurement and Evaluation Under § 36.101

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 1 2011-01-01 2011-01-01 false Aircraft Noise Measurement and Evaluation Under § 36.101 A Appendix A to Part 36 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT NOISE STANDARDS: AIRCRAFT TYPE AND AIRWORTHINESS CERTIFICATION Pt. 36, App. A Appendix A to Part 36—Aircraft...

  2. 77 FR 24251 - Consensus Standards, Light-Sport Aircraft

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-23

    ... Federal Aviation Administration Consensus Standards, Light-Sport Aircraft AGENCY: Federal Aviation... availability of three new and three revised consensus standards relating to the provisions of the Sport Pilot and Light-Sport Aircraft rule issued July 16, 2004, and effective September 1, 2004....

  3. 78 FR 35085 - Consensus Standards, Light-Sport Aircraft

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-11

    ... Federal Aviation Administration Consensus Standards, Light-Sport Aircraft AGENCY: Federal Aviation... availability of one new and seven revised consensus standards relating to the provisions of the Sport Pilot and Light-Sport Aircraft rule issued July 16, 2004, and effective September 1, 2004. ASTM...

  4. 75 FR 15629 - Airworthiness Directives; Cessna Aircraft Company Model 525A Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-30

    ... airplanes caused us to issue AD 2009-24-13, Amendment 39-16105 (74 FR 62479, November 30, 2009). AD 2009-24... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... Airworthiness Directive (AD) 2009-24-13, Amendment 39-16105 (74 FR 62479, November 30, 2009), and adding...

  5. 14 CFR 135.443 - Airworthiness release or aircraft maintenance log entry.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... certificate holder's manual; (2) Include a certification that— (i) The work was performed in accordance with the requirements of the certificate holder's manual; (ii) All items required to be inspected were... repair station located outside the United States , the airworthiness release or log entry required...

  6. Regulations governing the issuance of certificates of airworthiness of aircraft in France

    NASA Technical Reports Server (NTRS)

    1923-01-01

    These regulations, approved by the Under Secretary of State for Aeronautics, in a ministerial decree 1124/2a, Feb. 19, 1923, cancels the regulations of Aug. 31, 1920, and supplements the decree of Aug. 14, 1920, fixing the conditions under which certificates of airworthiness may be issued,in conformity with Article 5 of said decree.

  7. 75 FR 42340 - Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Model S-92A Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-21

    ... FR 19477-78). Examining the Docket You may examine the docket that contains the proposed AD, any... FR 11034, February 26, 1979); and 3. Will not have a significant economic impact, positive or... section of the Instructions ] for Continued Airworthiness (ICA) to reduce the life limit of the...

  8. 78 FR 41836 - Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Model Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-12

    ... final rule is effective July 12, 2013. The effective date for AD 2012-23-13 (77 FR 71087, November 29...: Airworthiness Directive 2012-23-13, Amendment 39-17269 (77 FR 71087, November 29, 2012), currently includes the... published in the Federal Register. Comments After we published our Final rule; request for comments (77...

  9. 78 FR 65554 - Exhaust Emission Standards for New Aircraft Turbine Engines and Identification Plate for Aircraft...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-01

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Parts 34 and 45 RIN 2120-AK15 Exhaust Emission Standards for New Aircraft Turbine Engines and Identification Plate for Aircraft Engines Correction In rule document 2013-24712, appearing on pages 63015-63017...

  10. 14 CFR 21.325 - Export airworthiness approvals.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Export airworthiness approvals. 21.325... AIRCRAFT CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS Export Airworthiness Approvals § 21.325 Export airworthiness approvals. (a) Kinds of approvals. (1) Export airworthiness approval of Class I products is...

  11. 14 CFR 21.331 - Issuance of export airworthiness approvals for aircraft engines, propellers, and articles.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... for aircraft engines, propellers, and articles. 21.331 Section 21.331 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT CERTIFICATION PROCEDURES FOR PRODUCTS AND... to export a new aircraft engine, propeller, or article that is manufactured under this part if...

  12. 76 FR 1349 - Airworthiness Directives; Cessna Aircraft Company (Cessna) (Type Certificate A00003SE Previously...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-10

    ... Company (Cessna) (Type Certificate A00003SE Previously Held by Columbia Aircraft Manufacturing (Previously... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... Columbia Aircraft Manufacturing (previously The Lancair Company)): Amendment 39-16569; Docket No....

  13. 77 FR 13488 - Airworthiness Directives; Thielert Aircraft Engines GmbH (TAE) Reciprocating Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-07

    ... (75 FR 32253, June 8, 2010), and adding the following new AD: 2010-11-09R1 Thielert Aircraft Engines... IBR on July 13, 2010 (75 FR 32253, June 8, 2010). (i) Thielert Aircraft Engines (TAE) GmbH, TAE SB No... 13, 2010 (75 FR 32253, June 8, 2010). ADDRESSES: For service information identified in this...

  14. 75 FR 21523 - Airworthiness Standards; Rotor Overspeed Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-26

    ... (65 FR 19477-78) or you may visit http://DocketsInfo.dot.gov . Docket: To read background documents or... Requirements AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM... standards. This action would establish uniform rotor overspeed design and test requirements for...

  15. 75 FR 17295 - Airworthiness Directives; Aircraft Industries a.s. Model L 23 Super Blanik Gliders

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-06

    ... Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a significant economic impact, positive or... Aircraft Industries, a.s.--Na z honech1177, 686 04 Kunovice, Czech Republic; telephone: +420 572 817...

  16. 76 FR 45011 - Control of Air Pollution From Aircraft and Aircraft Engines; Proposed Emission Standards and Test...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-27

    ... comment includes information claimed to be Confidential Business Information (CBI) or other information... Procedures for Aircraft;'' Final Rule, 38 FR 19088, July 17, 1973. \\12\\ U.S. EPA, ``Control of Air Pollution from Aircraft and Aircraft Engines; Emission Standards and Test Procedures;'' Final Rule, 62 FR...

  17. Air Force use of civil airworthiness criteria for testing and acceptance of military derivative transport aircraft

    SciTech Connect

    Marx, R.I.; Chapman, D.M.; Langley, M.J.; Fouts, R.S.

    1990-01-01

    A review of commercial aircraft programs and the use of FAA certification criteria in the acquisition of off-the-shelf transport aircraft by the USAF to fulfill its airlift requirements is presented. In addition, major differences between military and commercial test programs and acquisition are cited to illustrate the principal benefits to the Air Force of this method. Significantly reduced acquisition time, and reduced ground and flight testing and development costs are shown as benefits of this process. The unique aspects of certification of military derivatives, recent initiatives to codify the processes, and the impacts on changes required in the manner in which the USAF currently contracts for aircraft are discussed. 20 refs.

  18. 75 FR 59170 - Airworthiness Directives; British Aerospace Regional Aircraft Models Jetstream Series 3101 and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-27

    ... Regional Aircraft Models Jetstream Series 3101 and Jetstream Model 3201 Airplanes AGENCY: Federal Aviation... comments by any of the following methods: ] Federal eRulemaking Portal: Go to http://www.regulations.gov... regulations for practices, methods, and procedures the Administrator finds necessary for safety in...

  19. 75 FR 75882 - Airworthiness Directives; British Aerospace Regional Aircraft Models Jetstream Series 3101 and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-07

    ... Regional Aircraft Models Jetstream Series 3101 and Jetstream Model 3201 Airplanes AGENCY: Federal Aviation... Register on September 27, 2010 (75 FR 59170). That NPRM proposed to correct an unsafe condition for the... air commerce by prescribing regulations for practices, methods, and procedures the Administrator...

  20. 77 FR 59873 - Airworthiness Directives; Cessna Aircraft Company Airplanes; Initial Regulatory Flexibility Analysis

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-01

    ... FR 32103). That NPRM proposed to require you to install a placard that prohibits flight into known... issuance of the NPRM (76 FR 32105), June 3, 2011, as the FAA initially determined that the cost of the... Directives; Cessna Aircraft Company Airplanes; Initial Regulatory Flexibility Analysis AGENCY:...

  1. 75 FR 32863 - Airworthiness Directives; PILATUS AIRCRAFT LTD. Model PC-12/47E Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-10

    ... Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic impact, positive or... Directives; PILATUS AIRCRAFT LTD. Model PC-12/47E Airplanes AGENCY: Federal Aviation Administration (FAA... receive comments by July 26, 2010. Affected ADs (b) None. Applicability (c) This AD applies to...

  2. 75 FR 12150 - Airworthiness Directives; PILATUS Aircraft Ltd. Model PC-7 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-15

    ... Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic... Ltd. Model PC-7 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation.... Relevant Service Information PILATUS Aircraft Ltd. has issued PILATUS PC-7 Service Bulletin No....

  3. 75 FR 52482 - Airworthiness Directives; PILATUS Aircraft Ltd. Model PC-7 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-26

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... Ltd. Model PC-7 Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation... Pilatus Aircraft Ltd. has issued PC-7 Service Bulletin No. 57-015, Rev. No. 1, date July 23, 2010....

  4. 75 FR 17879 - Airworthiness Directives; The Cessna Aircraft Company Model 750 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-08

    ...-14817 (71 FR 65047, November 7, 2006), for all The Cessna Aircraft Company Model 750 airplanes. That AD...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have... Amendment 39-14817 (71 FR 65047, November 7, 2006) and adding the following new AD: The Cessna...

  5. 77 FR 14316 - Airworthiness Directives; Piper Aircraft, Inc. (Type Certificate Previously Held by The New Piper...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-09

    ... proposed AD. ] Discussion On May 27, 1980, AD 80-11-06, amendment 39-3776 (45 FR 35309), was published in... issued AD 80-11-06 (45 FR 35309, May 27, 1980), we have become aware that the aircraft data plate on some... applicability. The requirements in AD 80-11-06 (45 FR 35309, May 27, 1980), match those in Piper...

  6. 76 FR 29176 - Airworthiness Directives; Piper Aircraft, Inc. PA-23, PA-31, and PA-42 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-20

    ... compartment light does not impact the unsafe condition addressed by the AD. This proposed AD would remove the... from AD 2009-13-06, Amendment 39-15944 (74 FR 29118). The door opening in flight could significantly... Engineer, FAA, Atlanta Aircraft Certification Office, 1701 Columbia Avenue, College Park, Georgia...

  7. 75 FR 7405 - Airworthiness Directives; British Aerospace Regional Aircraft Model Jetstream Series 3101 and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-19

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... Directives; British Aerospace Regional Aircraft Model Jetstream Series 3101 and Jetstream Model 3201... normal internal leakage in the hydraulic system, resulted in hydraulic pressure being supplied to...

  8. 75 FR 22517 - Airworthiness Directives; British Aerospace Regional Aircraft Model Jetstream Series 3101 and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-29

    ..., 2010 (75 FR 7405). That NPRM proposed to correct an unsafe condition for the specified products. The... Order 12866; (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034... Aerospace Regional Aircraft Model Jetstream Series 3101 and Jetstream Model 3201 Airplanes AGENCY:...

  9. 78 FR 26241 - Airworthiness Directives; Diamond Aircraft Industries GmbH Powered Gliders

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-06

    ...-08, amendment 39-17365 (78 FR 14160, March 5, 2013), for all Diamond Aircraft Industries GmbH Models... certain publications listed in this AD as of April 9, 2013 (78 FR 14160, March 5, 2013). We must receive... products. Actions Since AD Was Issued Since we issued AD 2013-04-08 (78 FR 14160, March 5, 2013), it...

  10. 77 FR 65503 - Airworthiness Directives; Diamond Aircraft Industries GmbH Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-29

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... Industries GmbH Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation (DOT... (AD) for Diamond Aircraft Industries GmbH Models DA 42, DA 42 M-NG, and DA 42 NG airplanes....

  11. 77 FR 66409 - Airworthiness Directives; Diamond Aircraft Industries GmbH Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-05

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... Directives; Diamond Aircraft Industries GmbH Airplanes AGENCY: Federal Aviation Administration (FAA... TS, and HK 36 TTS airplanes. This proposed AD results from mandatory continuing...

  12. 77 FR 38463 - Issuance of Special Airworthiness Certificates for Light-Sport Category Aircraft

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-28

    ... Operation of Light-Sport Aircraft, was published in the Federal Register (69 FR 44772). The rule established... Privacy Act Statement in the Federal Register published on April 11, 2000 (65 FR 19477-78) or you may...://www.gpoaccess.gov/fr/index.html . You can also get a copy by sending a request to the Federal...

  13. 77 FR 38744 - Airworthiness Directives; Sikorsky Aircraft-Manufactured Model S-64F Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-29

    ..., 1997, we issued AD 97-10-15, Amendment 39-10028 (62 FR 28321, May 23, 1997), for the Sikorsky Aircraft...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect.... 39.13 by removing Amendment 39-10028 (62 FR 28321, May 23, 1997), and adding the following new...

  14. 76 FR 72128 - Airworthiness Directives; Thielert Aircraft Engines GmbH (TAE) Reciprocating Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-22

    ...-09, Amendment 39-16314 (75 FR 32253, June 8, 2010), for TAE Models TAE 125-01 and TAE 125-02-99...-flight shutdown, possibly resulting in reduced control of the aircraft. Actions Since Existing AD (75 FR... requirements of AD 2010- 11-09 (75 FR 32253, June 8, 2010), except the repetitive replacement interval...

  15. 76 FR 82110 - Airworthiness Directives; Thielert Aircraft Engines GmbH Reciprocating Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-30

    ...-16236 (75 FR 12439, March 16, 2010). (c) Applicability This AD applies to Thielert Aircraft Engines GmbH..., Amendment 39-16236 (75 FR 12439, March 16, 2010). That AD applies to the specified products. The NPRM published in the Federal Register on October 18, 2011 (76 FR 64285). That NPRM proposed to require...

  16. 78 FR 1733 - Airworthiness Directives; Thielert Aircraft Engines GmbH Reciprocating Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-09

    ... (76 FR 17757, March 31, 2011), and adding the following new AD: 2012-26-13 Thielert Aircraft Engines... rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2011-07-09, Amendment 39-16646 (76 FR 17757, March... September 17, 2012 (77 FR 57041). That NPRM proposed to require removing all software mapping versions...

  17. EMI Standards for Wireless Voice and Data on Board Aircraft

    NASA Technical Reports Server (NTRS)

    Ely, Jay J.; Nguyen, Truong X.

    2002-01-01

    The use of portable electronic devices (PEDs) on board aircraft continues to be an increasing source of misunderstanding between passengers and flight-crews, and consequently, an issue of controversy between wireless product manufacturers and air transport regulatory authorities. This conflict arises primarily because of the vastly different regulatory objectives between commercial product and airborne equipment standards for avoiding electromagnetic interference (EMI). This paper summarizes international regulatory limits and test processes for measuring spurious radiated emissions from commercially available PEDs, and compares them to international standards for airborne equipment. The goal is to provide insight for wireless product developers desiring to extend the freedom of their customers to use wireless products on-board aircraft, and to identify future product characteristics, test methods and technologies that may facilitate improved wireless freedom for airline passengers.

  18. Mission management aircraft operations manual

    NASA Technical Reports Server (NTRS)

    1992-01-01

    This manual prescribes the NASA mission management aircraft program and provides policies and criteria for the safe and economical operation, maintenance, and inspection of NASA mission management aircraft. The operation of NASA mission management aircraft is based on the concept that safety has the highest priority. Operations involving unwarranted risks will not be tolerated. NASA mission management aircraft will be designated by the Associate Administrator for Management Systems and Facilities. NASA mission management aircraft are public aircraft as defined by the Federal Aviation Act of 1958. Maintenance standards, as a minimum, will meet those required for retention of Federal Aviation Administration (FAA) airworthiness certification. Federal Aviation Regulation Part 91, Subparts A and B, will apply except when requirements of this manual are more restrictive.

  19. 14 CFR 375.20 - Airworthiness and registration certificates.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NAVIGATION OF FOREIGN CIVIL AIRCRAFT WITHIN THE UNITED STATES Rules Generally Applicable § 375.20 Airworthiness and registration certificates. Foreign civil aircraft... country. However, a foreign civil aircraft may carry, in lieu of such certificate of airworthiness,...

  20. 14 CFR 375.20 - Airworthiness and registration certificates.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NAVIGATION OF FOREIGN CIVIL AIRCRAFT WITHIN THE UNITED STATES Rules Generally Applicable § 375.20 Airworthiness and registration certificates. Foreign civil aircraft... country. However, a foreign civil aircraft may carry, in lieu of such certificate of airworthiness,...

  1. 14 CFR 375.20 - Airworthiness and registration certificates.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NAVIGATION OF FOREIGN CIVIL AIRCRAFT WITHIN THE UNITED STATES Rules Generally Applicable § 375.20 Airworthiness and registration certificates. Foreign civil aircraft... country. However, a foreign civil aircraft may carry, in lieu of such certificate of airworthiness,...

  2. 14 CFR 375.20 - Airworthiness and registration certificates.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NAVIGATION OF FOREIGN CIVIL AIRCRAFT WITHIN THE UNITED STATES Rules Generally Applicable § 375.20 Airworthiness and registration certificates. Foreign civil aircraft... country. However, a foreign civil aircraft may carry, in lieu of such certificate of airworthiness,...

  3. 14 CFR 375.20 - Airworthiness and registration certificates.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NAVIGATION OF FOREIGN CIVIL AIRCRAFT WITHIN THE UNITED STATES Rules Generally Applicable § 375.20 Airworthiness and registration certificates. Foreign civil aircraft... country. However, a foreign civil aircraft may carry, in lieu of such certificate of airworthiness,...

  4. 14 CFR 39.3 - Definition of airworthiness directives.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 1 2012-01-01 2012-01-01 false Definition of airworthiness directives. 39.3 Section 39.3 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES § 39.3 Definition of airworthiness directives. FAA's...

  5. 14 CFR 39.3 - Definition of airworthiness directives.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Definition of airworthiness directives. 39.3 Section 39.3 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES § 39.3 Definition of airworthiness directives. FAA's...

  6. 77 FR 65823 - Control of Air Pollution From Aircraft and Aircraft Engines; Emission Standards and Test Procedures

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-31

    ... From the Federal Register Online via the Government Publishing Office ENVIRONMENTAL PROTECTION AGENCY 40 CFR Parts 87 RIN 2060-AO70 Control of Air Pollution From Aircraft and Aircraft Engines; Emission Standards and Test Procedures Correction In rule document 2012-13828 appearing on pages...

  7. 76 FR 27865 - Airworthiness Directives; Cessna Aircraft Company Models 150, 152, 170, 172, 175, 177, 180, 182...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-13

    ... 14 CFR part 39 to supersede airworthiness directive (AD) 87-20-03 R2, Amendment 39-6669 (55 FR 36264... Register on November 8, 2010 (75 FR 68543). That NPRM proposed to retain all of the actions from the... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4)...

  8. 76 FR 20894 - Airworthiness Directives; Univair Aircraft Corporation Models (ERCO) 415-C, 415-CD, 415-D, E, G...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-14

    .... Discussion We issued AD 52-02-02 (21 FR 9447, December 4, 1956) for Ercoupe Model 415 Series and Models E and...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect... Sec. 39.13 by removing airworthiness directive (AD) 52-02-02, (21 FR 9447, December 4, 1956),...

  9. 75 FR 69861 - Airworthiness Directives; Cessna Aircraft Company (Cessna) 172, 175, 177, 180, 182, 185, 206, 207...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-16

    ....johnson@faa.gov . SUPPLEMENTARY INFORMATION: Airworthiness Directive 2008-26-10, Amendment 39-15776 (73 FR... Company (Cessna) 172, 175, 177, 180, 182, 185, 206, 207, 208, 210, 303, 336, and 337 Series Airplanes... obstruction is found for certain Cessna 172, 175, 177, 180, 182, 185, 206, 207, 208, 210, 303, 336, and...

  10. 75 FR 77524 - Special Conditions: Sikorsky Aircraft Corporation Model S-92A Helicopter; Installation of a...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-13

    ...These special conditions are issued for the Sikorsky Aircraft Corporation (Sikorsky) model S-92A helicopter. This helicopter, as modified by Sikorsky, will have novel or unusual design features associated with installing an optional SAR AFCS. The applicable airworthiness standards do not contain adequate or appropriate safety standards for this design feature. These special conditions contain......

  11. 77 FR 36341 - Control of Air Pollution From Aircraft and Aircraft Engines; Emission Standards and Test Procedures

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ...). \\17\\ U.S. EPA, ``Emission Standards and Test Procedures for Aircraft;'' Final Rule, 38 FR 19088, July... Standards and Test Procedures;'' Final Rule, 62 FR 25356, May 8, 1997. While ICAO's standards were not... pollution which may reasonably be anticipated to endanger public health or welfare was so limited, See 62...

  12. 14 CFR 43.16 - Airworthiness limitations.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Airworthiness limitations. 43.16 Section 43.16 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT... manufacturer's maintenance manual or Instructions for Continued Airworthiness shall perform the inspection...

  13. 78 FR 50313 - Final Additional Airworthiness Design Standards: Night Visual Flight Rules (VFR) Under the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-19

    ... Code of Federal Regulations and two additional design criteria issued on September 2, 2003 (68 FR 56809... Federal Register on Friday May 31, 2013, 78 FR 32576. No comments were received, and the airworthiness... hazard or carbon monoxide contamination in the personnel compartment. (b) Each exhaust system part with...

  14. Initial Experimental Airworthiness Certification Guidance for UAS. UAS Experimental Certification Process and Guidance

    NASA Technical Reports Server (NTRS)

    2005-01-01

    This paper addresses the regulatory processes and requirements already in place by which an applicant might obtain experimental airworthiness certification for a civil Unmanned Aircraft System (UAS). It is more extensive and subsequent to an earlier, similar deliverable, PD007, which was an interim study of the same topic. Since few regulatory airworthiness and operating standards exist for UAS like those for traditional manned aircraft and since most UAS have historically been developed and operated under military auspices, civil use of UAS in the NAS is a new and unfamiliar challenge requiring specific and unique considerations. Experimental certification is the most basic level of FAA approval toward routine UAS operation in the NAS. The paper reviews and explains existing FAA requirements for an applicant seeking experimental airworthiness approval and details the process for submission of necessary information. It summarizes the limited purposes for which experimental aircraft may be used and addresses pertinent aspects of UAS design, construction and operation in the NAS in harmony with traditional manned aircraft. Policy IPT position is that UAS, while different from manned aircraft, can use the same initial processes to gain civil operating experience under the experimental approval. Particular note is taken of those UAS-unique characteristics which require extra attention to assure equivalent safety of operation, such as the UAS control station and sense-and-avoid. The paper also provides "best practices" guidance for UAS manufacturers and FAA personnel in two appendices. The material in Appendix A is intended to provide guidance on assuring UAS safety to FAA, and provides FAA personnel with a suggested list of items to review, with a focus on UAS unique factors, prior to issuance of an experimental airworthiness certificate. Appendix B provides an outline for a program letter which a manufacturer could use in preparing the application for an UAS

  15. 14 CFR 21.183 - Issue of standard airworthiness certificates for normal, utility, acrobatic, commuter, and...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... affecting § 21.183, see the List of CFR Sections Affected, which appears in the Finding Aids section of the... certificates for normal, utility, acrobatic, commuter, and transport category aircraft; manned free balloons..., commuter, and transport category aircraft; manned free balloons; and special classes of aircraft. (a)...

  16. 14 CFR 21.183 - Issue of standard airworthiness certificates for normal, utility, acrobatic, commuter, and...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... § 21.183, see the List of CFR Sections Affected, which appears in the Finding Aids section of the... certificates for normal, utility, acrobatic, commuter, and transport category aircraft; manned free balloons..., commuter, and transport category aircraft; manned free balloons; and special classes of aircraft. Link...

  17. 14 CFR 21.183 - Issue of standard airworthiness certificates for normal, utility, acrobatic, commuter, and...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... affecting § 21.183, see the List of CFR Sections Affected, which appears in the Finding Aids section of the... certificates for normal, utility, acrobatic, commuter, and transport category aircraft; manned free balloons..., commuter, and transport category aircraft; manned free balloons; and special classes of aircraft. (a)...

  18. 76 FR 32103 - Airworthiness Directives; Cessna Aircraft Company 310, 320, 340, 401, 402, 411, 414, and 421...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-03

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... certificated aircraft mechanic must fabricate the additional placard and install both of these placards. The... properly certificated aircraft mechanic. Costs of Compliance We estimate that this proposed AD affects...

  19. 14 CFR 39.5 - When does FAA issue airworthiness directives?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false When does FAA issue airworthiness directives? 39.5 Section 39.5 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES § 39.5 When does FAA issue airworthiness directives? FAA...

  20. 14 CFR 39.5 - When does FAA issue airworthiness directives?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false When does FAA issue airworthiness directives? 39.5 Section 39.5 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES § 39.5 When does FAA issue airworthiness directives? FAA...

  1. 14 CFR 39.11 - What actions do airworthiness directives require?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false What actions do airworthiness directives require? 39.11 Section 39.11 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES § 39.11 What actions do airworthiness directives...

  2. Analysis of communication in the standard versus automated aircraft

    NASA Technical Reports Server (NTRS)

    Veinott, Elizabeth S.; Irwin, Cheryl M.

    1993-01-01

    Past research has shown crew communication patterns to be associated with overall crew performance, recent flight experience together, low-and high-error crew performance and personality variables. However, differences in communication patterns as a function of aircraft type and level of aircraft automation have not been fully addressed. Crew communications from ten MD-88 and twelve DC-9 crews were obtained during a full-mission simulation. In addition to large differences in overall amount of communication during the normal and abnormal phases of flight (DC-9 crews generating less speech than MD-88 crews), differences in specific speech categories were also found. Log-linear analyses also generated speaker-response patterns related to each aircraft type, although in future analyses these patterns will need to account for variations due to crew performance.

  3. Aircraft

    DOEpatents

    Hibbs, B.D.; Lissaman, P.B.S.; Morgan, W.R.; Radkey, R.L.

    1998-09-22

    This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Travelling at relatively slow speeds, and having a two-hundred foot wingspan that mounts photovoltaic cells on most all of the wing`s top surface, the aircraft uses only differential thrust of its eight propellers to turn. Each of five sections of the wing has one or more engines and photovoltaic arrays, and produces its own lift independent of the other sections, to avoid loading them. Five two-sided photovoltaic arrays, in all, are mounted on the wing, and receive photovoltaic energy both incident on top of the wing, and which is incident also from below, through a bottom, transparent surface. The aircraft is capable of a top speed of about ninety miles per hour, which enables the aircraft to attain and can continuously maintain altitudes of up to sixty-five thousand feet. Regenerative fuel cells in the wing store excess electricity for use at night, such that the aircraft can sustain its elevation indefinitely. A main spar of the wing doubles as a pressure vessel that houses hydrogen and oxygen gases for use in the regenerative fuel cell. The aircraft has a wide variety of applications, which include weather monitoring and atmospheric testing, communications, surveillance, and other applications as well. 31 figs.

  4. Aircraft

    DOEpatents

    Hibbs, Bart D.; Lissaman, Peter B. S.; Morgan, Walter R.; Radkey, Robert L.

    1998-01-01

    This disclosure provides a solar rechargeable aircraft that is inexpensive to produce, is steerable, and can remain airborne almost indefinitely. The preferred aircraft is a span-loaded flying wing, having no fuselage or rudder. Travelling at relatively slow speeds, and having a two-hundred foot wingspan that mounts photovoltaic cells on most all of the wing's top surface, the aircraft uses only differential thrust of its eight propellers to turn. Each of five sections of the wing has one or more engines and photovoltaic arrays, and produces its own lift independent of the other sections, to avoid loading them. Five two-sided photovoltaic arrays, in all, are mounted on the wing, and receive photovoltaic energy both incident on top of the wing, and which is incident also from below, through a bottom, transparent surface. The aircraft is capable of a top speed of about ninety miles per hour, which enables the aircraft to attain and can continuously maintain altitudes of up to sixty-five thousand feet. Regenerative fuel cells in the wing store excess electricity for use at night, such that the aircraft can sustain its elevation indefinitely. A main spar of the wing doubles as a pressure vessel that houses hydrogen and oxygen gasses for use in the regenerative fuel cell. The aircraft has a wide variety of applications, which include weather monitoring and atmospheric testing, communications, surveillance, and other applications as well.

  5. 75 FR 75868 - Airworthiness Directives; Diamond Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-07

    ... Register on August 25, 2010 (75 FR 52292). That NPRM proposed to require a retrofit of the rear passenger... 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034... Aircraft Industries GmbH Models DA 40 and DA 40F Airplanes AGENCY: Federal Aviation Administration,...

  6. 14 CFR 21.187 - Issue of multiple airworthiness certification.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Issue of multiple airworthiness certification. 21.187 Section 21.187 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS Airworthiness Certificates § 21.187...

  7. Data development technical support document for the aircraft crash risk analysis methodology (ACRAM) standard

    SciTech Connect

    Kimura, C.Y.; Glaser, R.E.; Mensing, R.W.; Lin, T.; Haley, T.A.; Barto, A.B.; Stutzke, M.A.

    1996-08-01

    The Aircraft Crash Risk Analysis Methodology (ACRAM) Panel has been formed by the US Department of Energy Office of Defense Programs (DOE/DP) for the purpose of developing a standard methodology for determining the risk from aircraft crashes onto DOE ground facilities. In order to accomplish this goal, the ACRAM panel has been divided into four teams, the data development team, the model evaluation team, the structural analysis team, and the consequence team. Each team, consisting of at least one member of the ACRAM plus additional DOE and DOE contractor personnel, specializes in the development of the methodology assigned to that team. This report documents the work performed by the data development team and provides the technical basis for the data used by the ACRAM Standard for determining the aircraft crash frequency. This report should be used to provide the generic data needed to calculate the aircraft crash frequency into the facility under consideration as part of the process for determining the aircraft crash risk to ground facilities as given by the DOE Standard Aircraft Crash Risk Assessment Methodology (ACRAM). Some broad guidance is presented on how to obtain the needed site-specific and facility specific data but this data is not provided by this document.

  8. The impact of emission standards on the design of aircraft gas turbine engine combustors

    NASA Technical Reports Server (NTRS)

    Rudey, R. A.

    1976-01-01

    The advent of environmental standards for controlling aircraft gas turbine engine emissions has led to a reevaluation of combustor design techniques. Effective emission control techniques have been identified and a wide spectrum of potential applications for these techniques to existing and advanced engines are being considered. Results from advanced combustor concept evaluations and from fundamental experiments are presented and discussed and comparisons are made with existing EPA emission standards and recommended levels for high altitude cruise. The impact that the advanced low emission concepts may impose on future aircraft engine combustor designs and related engine components is discussed.

  9. Nordic Standards for measurement of aircraft noise immission in residential areas and noise reduction of dwellings

    NASA Astrophysics Data System (ADS)

    Svane, Christian; Plovsing, Birger

    Quantification by measurement of aircraft noise in residential areas and air traffic noise reduction of dwellings suffer from sensibility to the measurement technique used. Around the Copenhagen Airport (200.000 opr./year) 3.500 families have been granted from 50% to 90% of sound insulation costs by the Danish Government. Based on experience from evaluation measurements carried out by the Danish Acoustical Institute, the authors have proposed standardized measurement methods for the outdoor aircraft noise in residential areas and for the noise reduction of dwellings. In 1989 both noise measurement methods were accepted as Nordic Standards (NORDTEST ACOU 074 and 075) by Denmark, Finland, Iceland, Norway and Sweden.

  10. Development of a proposed international standard for certification of aircraft to High Intensity Radiated Fields (HIRF)

    NASA Technical Reports Server (NTRS)

    Sargent, Noel B.

    1993-01-01

    Avionic systems performing critical functions in modern aircraft are potentially susceptible to the hazards of electromagnetic radiation from ground and airborne transmitters. The Federal Aviation Administration (FAA) requested that the Society of Automotive Engineers (SAE) coordinate the development of procedures and guidance material which can be used during the aircraft certification process to ensure adequate protection against high intensity radiated fields (HIRF). This paper addresses both the technical challenge of drafting a certification procedure and guidance standard as well as the management process used by the SAE subcommittee AE4R to converge a diverse range of opinions by its international membership in the shortest possible time.

  11. The impact of emissions standards on the design of aircraft gas turbine engine combustors

    NASA Technical Reports Server (NTRS)

    Rudey, R. A.

    1976-01-01

    Effective emission control techniques have been identified and a wide spectrum of potential applications for these techniques to existing and advanced engines are being considered. Results from advanced combustor concept evaluations and from fundamental experiments are presented and discussed and comparisons are made with existing EPA emission standards and recommended levels for high altitude cruise. The impact that the advanced low emission concepts may impose on future aircraft engine combustor designs and related engine components is discussed.

  12. ACSYNT - A standards-based system for parametric, computer aided conceptual design of aircraft

    NASA Technical Reports Server (NTRS)

    Jayaram, S.; Myklebust, A.; Gelhausen, P.

    1992-01-01

    A group of eight US aerospace companies together with several NASA and NAVY centers, led by NASA Ames Systems Analysis Branch, and Virginia Tech's CAD Laboratory agreed, through the assistance of Americal Technology Initiative, in 1990 to form the ACSYNT (Aircraft Synthesis) Institute. The Institute is supported by a Joint Sponsored Research Agreement to continue the research and development in computer aided conceptual design of aircraft initiated by NASA Ames Research Center and Virginia Tech's CAD Laboratory. The result of this collaboration, a feature-based, parametric computer aided aircraft conceptual design code called ACSYNT, is described. The code is based on analysis routines begun at NASA Ames in the early 1970's. ACSYNT's CAD system is based entirely on the ISO standard Programmer's Hierarchical Interactive Graphics System and is graphics-device independent. The code includes a highly interactive graphical user interface, automatically generated Hermite and B-Spline surface models, and shaded image displays. Numerous features to enhance aircraft conceptual design are described.

  13. 14 CFR 21.182 - Aircraft identification.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Aircraft identification. 21.182 Section 21.182 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS Airworthiness Certificates § 21.182 Aircraft identification....

  14. 14 CFR 21.182 - Aircraft identification.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 1 2013-01-01 2013-01-01 false Aircraft identification. 21.182 Section 21.182 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS Airworthiness Certificates § 21.182 Aircraft identification....

  15. 14 CFR 21.182 - Aircraft identification.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 1 2012-01-01 2012-01-01 false Aircraft identification. 21.182 Section 21.182 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS Airworthiness Certificates § 21.182 Aircraft identification....

  16. 14 CFR 135.25 - Aircraft requirements.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... Aviation if— (1) The aircraft carries an appropriate airworthiness certificate issued by the country of... requirements of this chapter (14 CFR chapter I) that would be applicable to that aircraft were it registered in... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Aircraft requirements. 135.25 Section...

  17. 14 CFR 21.182 - Aircraft identification.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 1 2011-01-01 2011-01-01 false Aircraft identification. 21.182 Section 21.182 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS Airworthiness Certificates § 21.182 Aircraft identification....

  18. 14 CFR 21.182 - Aircraft identification.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Aircraft identification. 21.182 Section 21.182 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS Airworthiness Certificates § 21.182 Aircraft identification....

  19. 77 FR 1614 - Harmonization of Airworthiness Standards for Transport Category Airplanes-Landing Gear Retracting...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-11

    ... Register on January 5, 2011 (76 FR 472). The NPRM proposed to amend the standards for landing gear... Certification Requirements in Supercooled Large Drop, Mixed Phase, and Ice Crystal Icing Conditions (75 FR 37311... Transport Category Airplanes--Landing Gear Retracting Mechanisms and Pilot Compartment View AGENCY:...

  20. 76 FR 74649 - Harmonization of Various Airworthiness Standards for Transport Category Airplanes-Flight Rules

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-01

    ... November 19, 2010 (75 FR 70854). The proposal discussed changes to part 25 in four areas: 1. Selection of... (55 FR 29756), July 20, 1990. The FAA considered them unnecessary since directional and lateral... Standards for Transport Category Airplanes--Flight Rules AGENCY: Federal Aviation Administration (FAA),...

  1. 78 FR 52848 - Occupational Safety and Health Standards for Aircraft Cabin Crewmembers

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-27

    ... conditions of aircraft cabin crew while they are onboard aircraft in operation. DATES: This action becomes... the working conditions of aircraft cabin crewmembers while they are onboard aircraft in operation... enforcement onboard the aircraft. The FAA agrees with the proposed recommendation. Specific procedures...

  2. 14 CFR 39.15 - Does an airworthiness directive apply if the product has been changed?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false Does an airworthiness directive apply if the product has been changed? 39.15 Section 39.15 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES § 39.15 Does an...

  3. 14 CFR 21.50 - Instructions for continued airworthiness and manufacturer's maintenance manuals having...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Instructions for continued airworthiness and manufacturer's maintenance manuals having airworthiness limitations sections. 21.50 Section 21.50 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT...

  4. A Framework for Simulation of Aircraft Flyover Noise Through a Non-Standard Atmosphere

    NASA Technical Reports Server (NTRS)

    Arntzen, Michael; Rizzi, Stephen A.; Visser, Hendrikus G.; Simons, Dick G.

    2012-01-01

    This paper describes a new framework for the simulation of aircraft flyover noise through a non-standard atmosphere. Central to the framework is a ray-tracing algorithm which defines multiple curved propagation paths, if the atmosphere allows, between the moving source and listener. Because each path has a different emission angle, synthesis of the sound at the source must be performed independently for each path. The time delay, spreading loss and absorption (ground and atmosphere) are integrated along each path, and applied to each synthesized aircraft noise source to simulate a flyover. A final step assigns each resulting signal to its corresponding receiver angle for the simulation of a flyover in a virtual reality environment. Spectrograms of the results from a straight path and a curved path modeling assumption are shown. When the aircraft is at close range, the straight path results are valid. Differences appear especially when the source is relatively far away at shallow elevation angles. These differences, however, are not significant in common sound metrics. While the framework used in this work performs off-line processing, it is conducive to real-time implementation.

  5. NASA/aircraft industry standard specification for graphite fiber toughened thermoset resin composite material

    NASA Technical Reports Server (NTRS)

    1985-01-01

    A standard specification for a selected class of graphite fiber/toughened thermoset resin matrix material was developed through joint NASA/Aircraft Industry effort. This specification was compiled to provide uniform requirements and tests for qualifying prepreg systems and for acceptance of prepreg batches. The specification applies specifically to a class of composite prepreg consisting of unidirectional graphite fibers impregnated with a toughened thermoset resin that produce laminates with service temperatures from -65 F to 200 F when cured at temperatures below or equal to 350 F. The specified prepreg has a fiber areal weight of 145 g sq m. The specified tests are limited to those required to set minimum standards for the uncured prepreg and cured laminates, and are not intended to provide design allowable properties.

  6. 14 CFR 91.715 - Special flight authorizations for foreign civil aircraft.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... civil aircraft. 91.715 Section 91.715 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... RULES Foreign Aircraft Operations and Operations of U.S.-Registered Civil Aircraft Outside of the United... foreign civil aircraft. (a) Foreign civil aircraft may be operated without airworthiness...

  7. 14 CFR 91.715 - Special flight authorizations for foreign civil aircraft.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... civil aircraft. 91.715 Section 91.715 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... RULES Foreign Aircraft Operations and Operations of U.S.-Registered Civil Aircraft Outside of the United... foreign civil aircraft. (a) Foreign civil aircraft may be operated without airworthiness...

  8. 14 CFR 91.715 - Special flight authorizations for foreign civil aircraft.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... civil aircraft. 91.715 Section 91.715 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... RULES Foreign Aircraft Operations and Operations of U.S.-Registered Civil Aircraft Outside of the United... foreign civil aircraft. (a) Foreign civil aircraft may be operated without airworthiness...

  9. 14 CFR 91.715 - Special flight authorizations for foreign civil aircraft.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... civil aircraft. 91.715 Section 91.715 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT... RULES Foreign Aircraft Operations and Operations of U.S.-Registered Civil Aircraft Outside of the United... foreign civil aircraft. (a) Foreign civil aircraft may be operated without airworthiness...

  10. 14 CFR 91.205 - Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and...

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... chapter. (4) Slip-skid indicator. (5) Sensitive altimeter adjustable for barometric pressure. (6) A clock... engine. (5) Oil pressure gauge for each engine using pressure system. (6) Temperature gauge for each liquid-cooled engine. (7) Oil temperature gauge for each air-cooled engine. (8) Manifold pressure...

  11. 14 CFR 91.205 - Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and...

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... chapter. (4) Slip-skid indicator. (5) Sensitive altimeter adjustable for barometric pressure. (6) A clock... engine. (5) Oil pressure gauge for each engine using pressure system. (6) Temperature gauge for each liquid-cooled engine. (7) Oil temperature gauge for each air-cooled engine. (8) Manifold pressure...

  12. 14 CFR 91.205 - Powered civil aircraft with standard category U.S. airworthiness certificates: Instrument and...

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... chapter. (4) Slip-skid indicator. (5) Sensitive altimeter adjustable for barometric pressure. (6) A clock... engine. (5) Oil pressure gauge for each engine using pressure system. (6) Temperature gauge for each liquid-cooled engine. (7) Oil temperature gauge for each air-cooled engine. (8) Manifold pressure...

  13. A STOL airworthiness investigation using a simulation of a deflected slipstream transport. Volume 1: Summary of results and airworthiness implications

    NASA Technical Reports Server (NTRS)

    Stapleford, R. L.; Heffley, R. K.; Rumold, R. C.; Hynes, C. S.; Scott, B. C.

    1974-01-01

    A simulator study of short takeoff and landing (STOL) aircraft was conducted using a model of a deflected slipstream transport aircraft. The subjects considered are: (1) the approach, (2) flare and landing, (3) go-around, and (4) takeoff phases of flight. The results are summarized and possible implications with regard to airworthiness criteria are discussed. A data base is provided for future STOL airworthiness requirements and a preliminary indication of potential problem areas is developed. Comparison of the simulation results with various proposed STOL criteria indicates significant deficiencies in many of these criteria.

  14. Emerging NDE Technology for aging aircraft

    SciTech Connect

    Moore, D.G.; Perry, R.L.

    1998-03-01

    This paper presents an overview of several emerging nondestructive evaluation technologies that are being employed or considered for use to inspect commercial transport, commuter aircraft and military aircraft. An overview of the Federal Aviation Administration (FAA) Airworthiness Assurance NDI Validation Center (AANC) is described and how AANC teams with industry, universities, and other federal entities to assess these technologies.

  15. Eigenvalue assignment based on standard characteristic polynominal in design of aircraft control systems

    NASA Astrophysics Data System (ADS)

    Li, Aijun; Lv, Yang; Wang, Changqing

    2008-10-01

    Design method of eigenvalue assignment based on standard characteristic polynomial, as well as mathematical solving process of the method, is proposed in this paper so as to resolve the uncertainty of ideal eigenvalue choice in modern control theory and the difficultly in engineering implementation of modern control system design methods. Longitudinal stability holding control system of an aircraft was designed and simulated by employing proposed method. Dynamic character and robust performance simulation of the system are given. Simulation results show that the method achieves the control quality and has better robustness than another method. There is only one design parameter which is easy to calculate. So, the method is characterized as simple design, logical structure, easy programming and convenient for engineering implementation.

  16. 14 CFR 39.7 - What is the legal effect of failing to comply with an airworthiness directive?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false What is the legal effect of failing to comply with an airworthiness directive? 39.7 Section 39.7 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES § 39.7 What is the legal effect...

  17. Development, enhancement, and evaluation of aircraft measurement techniques for national ambient air quality standard criteria pollutants

    NASA Astrophysics Data System (ADS)

    Brent, Lacey Cluff

    The atmospheric contaminants most harmful to human health are designated Criteria Pollutants. To help Maryland attain the national ambient air quality standards (NAAQS) for Criteria Pollutants, and to improve our fundamental understanding of atmospheric chemistry, I conducted aircraft measurements in the Regional Atmospheric Measurement Modeling Prediction Program (RAMMPP). These data are used to evaluate model simulations and satellite observations. I developed techniques for improving airborne observation of two NAAQS pollutants, particulate matter (PM) and nitrogen dioxide (NO2). While structure and composition of organic aerosol are important for understanding PM formation, the molecular speciation of organic ambient aerosol remains largely unknown. The spatial distribution of reactive nitrogen is likewise poorly constrained. To examine water-soluble organic aerosol (WSOA) during an air pollution episode, I designed and implemented a shrouded aerosol inlet system to collect PM onto quartz fiber filters from a Cessna 402 research aircraft. Inlet evaluation conducted during a side-by-side flight with the NASA P3 demonstrated agreement to within 30%. An ion chromatographic mass spectrometric method developed using the NIST Standard Reference Material (SRM) 1649b Urban Dust, as a surrogate material resulted in acidic class separation and resolution of at least 34 organic acids; detection limits approach pg/g concentrations. Analysis of aircraft filter samples resulted in detection of 8 inorganic species and 16 organic acids of which 12 were quantified. Aged, re-circulated metropolitan air showed a greater number of dicarboxylic acids compared to air recently transported from the west. While the NAAQS for NO2 is rarely exceeded, it is a precursor molecule for ozone, America's most recalcitrant pollutant. Using cavity ringdown spectroscopy employing a light emitting diode (LED), I measured vertical profiles of NO2 (surface to 2.5 km) west (upwind) of the Baltimore

  18. 14 CFR 21.24 - Issuance of type certificate: primary category aircraft.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... completed the engineering analysis necessary to demonstrate compliance with the applicable airworthiness requirements; the applicant has conducted appropriate flight, structural, propulsion, and systems tests...; the type design complies with the airworthiness standards and noise requirements established for...

  19. A Grounded Theory Study of Aircraft Maintenance Technician Decision-Making

    NASA Astrophysics Data System (ADS)

    Norcross, Robert

    Aircraft maintenance technician decision-making and actions have resulted in aircraft system errors causing aircraft incidents and accidents. Aircraft accident investigators and researchers examined the factors that influence aircraft maintenance technician errors and categorized the types of errors in an attempt to prevent similar occurrences. New aircraft technology introduced to improve aviation safety and efficiency incur failures that have no information contained in the aircraft maintenance manuals. According to the Federal Aviation Administration, aircraft maintenance technicians must use only approved aircraft maintenance documents to repair, modify, and service aircraft. This qualitative research used a grounded theory approach to explore the decision-making processes and actions taken by aircraft maintenance technicians when confronted with an aircraft problem not contained in the aircraft maintenance manuals. The target population for the research was Federal Aviation Administration licensed aircraft and power plant mechanics from across the United States. Nonprobability purposeful sampling was used to obtain aircraft maintenance technicians with the experience sought in the study problem. The sample population recruitment yielded 19 participants for eight focus group sessions to obtain opinions, perceptions, and experiences related to the study problem. All data collected was entered into the Atlas ti qualitative analysis software. The emergence of Aircraft Maintenance Technician decision-making themes regarding Aircraft Maintenance Manual content, Aircraft Maintenance Technician experience, and legal implications of not following Aircraft Maintenance Manuals surfaced. Conclusions from this study suggest Aircraft Maintenance Technician decision-making were influenced by experience, gaps in the Aircraft Maintenance Manuals, reliance on others, realizing the impact of decisions concerning aircraft airworthiness, management pressures, and legal concerns

  20. Standard test method for corrosion of low-embrittling cadmium plate by aircraft maintenance chemicals. ASTM standard

    SciTech Connect

    1989-02-01

    This test method is under the jurisdiction of ASTM Committee F-7 on Aerospace and Aircraft and is the direct responsibility of Subcommittee F07.07 on Qualification Testing of Aircraft Cleaning Materials. Current edition approved Nov. 17, 1988. Published February 1989 and reapproved 1998.

  1. 75 FR 43397 - Airworthiness Directives; Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-26

    ... in the Federal Register on June 23, 2010 (75 FR 35619), and applies to certain Piper Aircraft, Inc..., the FAA issued AD 2010-13-07, Amendment 39-16338 (75 FR 35619, June 23, 2010), which applies to... Accordingly, the publication of June 23, 2010 (75 FR 35619), of Amendment 39-16338; AD 2010-13-07, which...

  2. 75 FR 7407 - Airworthiness Directives; Piper Aircraft, Inc. Models PA-32R-301T and PA-46-350P Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-02-19

    ... caused us to issue the following ADs: AD 2004-23-17, Amendment 39-13872 (69 FR 67809, November 22, 2004... FR 34941, June 1, 2000), applicable to Commander Aircraft Company Model 114TC airplanes. A newer and... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and...

  3. 77 FR 57041 - Airworthiness Directives; Thielert Aircraft Engines GmbH Models TAE 125-01, TAE 125-02-99, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-17

    ...-07-09, amendment 39-16646 (76 FR 17757, March 31, 2011), for Thielert Aircraft Engines GmbH models... a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26...-09, Amendment 39-16646 (76 FR 17757, March 31, 2011), and adding the following new AD:...

  4. TAKEOFF AND LANDING PERFORMANCE CAPABILITIES OF TRANSPORT CATEGORY AIRCRAFT

    NASA Technical Reports Server (NTRS)

    Foss, W. E.

    1994-01-01

    One of the most important considerations in the design of a commercial transport aircraft is the aircraft's performance during takeoff and landing operations. The aircraft must be designed to meet field length constraints in accordance with airworthiness standards specified in the Federal Aviation Regulations. In addition, the noise levels generated during these operations must be within acceptable limits. This computer program provides for the detailed analysis of the takeoff and landing performance capabilities of transport category aircraft. The program calculates aircraft performance in accordance with the airworthiness standards of the Federal Aviation Regulations. The aircraft and flight constraints are represented in sufficient detail to permit realistic sensitivity studies in terms of either configuration modifications or changes in operational procedures. This program provides for the detailed performance analysis of the takeoff and landing capabilities of specific aircraft designs and allows for sensitivity studies. The program is not designed to synthesize configurations or to generate aerodynamic, propulsion, or structural characteristics. This type of information must be generated externally to the program and then input as data. The program's representation of the aircraft data is extensive and includes realistic limits on engine and aircraft operational boundaries and maximum attainable lift coefficients. The takeoff and climbout flight-path is generated by a stepwise integration of the equation of motion. Special features include options for nonstandard-day operation, for balanced field length, for derated throttle to meet a given field length for off-loaded aircraft, and for throttle cutback during climbout for community noise alleviation. Advanced takeoff procedures for noise alleviation such as programmed throttle and control flaps may be investigated with the program. Approach profiles may incorporate advanced procedures such as two segment

  5. 14 CFR 35.4 - Instructions for Continued Airworthiness.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Instructions for Continued Airworthiness. 35.4 Section 35.4 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... program exists to ensure their completion prior to delivery of the first aircraft with the...

  6. 14 CFR 33.4 - Instructions for Continued Airworthiness.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Instructions for Continued Airworthiness. 33.4 Section 33.4 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... certification if a program exists to ensure their completion prior to delivery of the first aircraft with...

  7. 14 CFR 21.223 - Class II provisional airworthiness certificates.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Class II provisional airworthiness certificates. 21.223 Section 21.223 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF... the aircraft has been issued to the manufacturer. (c) The applicant must submit a statement by...

  8. 77 FR 72998 - Policy Statement on Occupational Safety and Health Standards for Aircraft Cabin Crewmembers

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-07

    ..., 2000 (65 FR 19477-19478), as well as at http://DocketsInfo.dot.gov . Docket: Background documents or... they are onboard aircraft in operation. DATES: Send comments on or before January 7, 2013....

  9. 78 FR 26103 - Proposed Standard Operating Procedure (SOP) of the Aircraft Certification Service (AIR) Project...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-03

    ... Service (AIR) Project Prioritization and Resource Management ACTION: Notice of availability and request... process used to prioritize certification projects and manage certification project resources when local... Operating Procedure--Aircraft Certification Service Project Prioritization. FOR FURTHER INFORMATION...

  10. 14 CFR 39.27 - What do I do if the airworthiness directive conflicts with the service document on which it is...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false What do I do if the airworthiness directive conflicts with the service document on which it is based? 39.27 Section 39.27 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES § 39.27 What do...

  11. 14 CFR 39.19 - May I address the unsafe condition in a way other than that set out in the airworthiness directive?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false May I address the unsafe condition in a way other than that set out in the airworthiness directive? 39.19 Section 39.19 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS DIRECTIVES §...

  12. Development of EPA aircraft piston engine emission standards. [for air quality

    NASA Technical Reports Server (NTRS)

    Houtman, W.

    1976-01-01

    Piston engine light aircraft are significant sources of carbon monoxide in the vicinity of high activity general aviation airports. Substantial reductions in carbon monoxide were achieved by fuel mixture leaning using improved fuel management systems. The air quality impact of the hydrocarbon and oxides of nitrogen emissions from piston engine light aircraft were insufficient to justify the design constraints being confronted in present control system developments.

  13. 77 FR 6023 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-07

    ... address the scope of Special Federal Aviation Regulation 88 (SFAR 88) (66 FR 23086, May 7, 2001) and the... Inspection Requirements'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for..., SFAR 88 (66 FR 23086, May 7, 2001) requires certain type design (i.e., type certificate (TC)...

  14. 14 CFR 21.24 - Issuance of type certificate: primary category aircraft.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... engineering analysis necessary to demonstrate compliance with the applicable airworthiness requirements; the applicant has conducted appropriate flight, structural, propulsion, and systems tests necessary to show that the aircraft, its components, and its equipment are reliable and function properly; the type...

  15. 14 CFR 21.24 - Issuance of type certificate: primary category aircraft.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... engineering analysis necessary to demonstrate compliance with the applicable airworthiness requirements; the applicant has conducted appropriate flight, structural, propulsion, and systems tests necessary to show that the aircraft, its components, and its equipment are reliable and function properly; the type...

  16. 76 FR 39035 - Airworthiness Directives; Airbus Model A310 Series Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-05

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Model A310.... ADDRESSES: You may send comments by any of the following methods: Federal eRulemaking Portal: Go to http... Requirements'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for transport...

  17. 76 FR 54528 - Standard Operating Procedures (SOP) of the Aircraft Certification Service (AIR) Process for the...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-01

    ... (AIR) Process for the Sequencing of Certification and Validation Projects AGENCY: Federal Aviation...: Comments Invited You are invited to comment on the SOP for the sequencing of certification and validation... used for sequencing new certification and validation projects worked in its Aircraft...

  18. Classification of Unmanned Aircraft Systems. UAS Classification/Categorization for Certification

    NASA Technical Reports Server (NTRS)

    2004-01-01

    Category, class, and type designations are primary means to identify appropriate aircraft certification basis, operating rules/limitations, and pilot qualifications to operate in the National Airspace System (NAS). The question is whether UAS fit into existing aircraft categories or classes, or are unique enough to justify the creation of a new category/class. In addition, the characteristics or capabilities, which define when an UAS becomes a regulated aircraft, must also be decided. This issue focuses on UAS classification for certification purposes. Several approaches have been considered for classifying UAS. They basically group into either using a weight/mass basis, or a safety risk basis, factoring in the performance of the UAS, including where the UAS would operate. Under existing standards, aircraft must have a Type Certificate and Certificate of Airworthiness, in order to be used for "compensation or hire", a major difference from model aircraft. Newer technologies may make it possible for very small UAS to conduct commercial services, but that is left for a future discussion to extend the regulated aircraft to a lower level. The Access 5 position is that UAS are aircraft and should be regulated above the weight threshold differentiating them from model airplanes. The recommended classification grouping is summarized in a chart.

  19. FAA Airworthiness Assurance NDI Validation Center (AANC) operated by Sandia National Laboratories.

    SciTech Connect

    Roach, Dennis Patrick; Hartman, Roger D.

    2010-09-01

    Airworthiness Assurance NDI Validation Center (AANC) objectives are: (1) Enhance aircraft safety and reliability; (2) Aid developing advanced aircraft designs and maintenance techniques; (3) Provide our customers with comprehensive, independent, and quantitative/qualitative evaluations of new and enhanced inspection, maintenance, and repair techniques; (4) Facilitate transferring effective technologies into the aviation industry; (5) Support FAA rulemaking process by providing guidance on content & necessary tools to meet requirements or recommendations of FARs, ADs, ACs, SBs, SSIDs, CPCP, and WFD; and (6) Coordinate with and respond to Airworthiness Assurance Working Group (AAWG) in support of FAA Aviation Rulemaking Advisory Committee (ARAC).

  20. Overview of composite projects at the FAA Airworthiness Assurance Validation Center

    SciTech Connect

    Shurtleff, W.W.; Roach, D.P.; Valley, M.T.

    1997-03-01

    The Airworthiness Assurance NDI Validation Center (AANC) was established by the Federal Aviation Administration (FAA) William J. Hughes Technical Center at Sandia National Laboratories in 1991 to support nondestructive inspection (NDI) technology development and assessment. The evaluations are done using a variety of characterized test specimens and test beds including entire transport and commuter aircraft. Although the initial work at the Center concentrated on metallic structure, the FAA has more recently expanded the AANC`s charter to include projects directed at composite repair and inspection. The three projects briefly described in this paper are: (1) the validation and technology transfer of a thermographic techniques for composite inspection, (2) the development of generic composite laminate and honeycomb calibration reference standards, and (3) the certification of the use of boron epoxy doubler on a Lockheed L-1011.

  1. Revision of certification standards for aviation maintenance personnel

    NASA Technical Reports Server (NTRS)

    Vipond, Leslie K.

    1992-01-01

    Part 65, Subparts D and E, of the Federal Aviation Regulations (FAR) identify the certification requirements for aviation mechanics and aviation repairmen. The training, experience, privileges, ratings, recordkeeping, and currency requirements for aviation maintenance personnel are also addressed by those parts of the FAR. The recent emergence of the aging fleet problem and the introduction of new technologies, aircraft, engines, and aeronautical products has caused certain portions of these rules to become obsolete. Further, international political arrangements, such as bilateral airworthiness and maintenance agreements, International Civil Aviation Organization (ICAO) standards, certain international agreements for maintenance personnel training, and mechanic certificate reciprocity, have all impacted on the current regulatory policy.

  2. 78 FR 46303 - Airworthiness Directives; Fokker Services B.V. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-31

    ... fuel system; and revising the airplane maintenance program by incorporating critical design... switch and subsequently, the implementation of the associated Critical Design Configuration Control...'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for transport airplanes and...

  3. 14 CFR 91.1411 - Continuous airworthiness maintenance program use by fractional ownership program manager.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... program use by fractional ownership program manager. 91.1411 Section 91.1411 Aeronautics and Space FEDERAL... airworthiness maintenance program use by fractional ownership program manager. Fractional ownership program... through 91.1443. Any program manager who elects to maintain the program aircraft using a...

  4. 78 FR 40063 - Airworthiness Directives; Erickson Air-Crane Incorporated Helicopters (Type Certificate...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-03

    ...We propose to supersede an existing airworthiness directive (AD) for Sikorsky Aircraft Corporation (Sikorsky) Model S-64E helicopters. The existing AD requires checks of the main rotor blades for a crack. This proposed AD would retain the actions of the existing AD, would reflect that the type certificate (TC) for this model helicopter has been transferred to Erickson Air-Crane Incorporated......

  5. Crack detection on HU-25 Guardian aircraft

    SciTech Connect

    Moore, D.G.; Jones, C.R.; Mihelic, J.E.; Dassler, E.; Walizer, J.

    1996-10-01

    An ultrasonic inspection method was developed at FAA`s Airworthiness Assurance NDI Validation Center (AANC) to easily and rapidly detect hidden fatigue cracks in the copilot vertical windshield post on USCG (Coast Guard) HU-25 `Guardian` aircraft. The inspection procedure locates hidden cracks as small as 3.2 mm emanating from internal fastener holes and determines their length. A test procedure was developed and a baseline assessment of the USCG fleet conducted. Inspection results on 41 aircraft revealed good correlation with results made during subsequent structural disassembly and visual inspection of selected aircraft.

  6. 78 FR 63017 - Exhaust Emissions Standards for New Aircraft Gas Turbine Engines and Identification Plate for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-23

    ... engines with rated thrusts greater than 26.7 kilonewtons (kN) (76 FR 45012). The EPA also proposed...). The final rule adopting these proposals was published on June 18, 2012 (77 FR 36342), and was... (77 FR 76842) adopting the EPA's new emissions standards in part 34. Although the EPA's NPRM...

  7. 78 FR 63015 - Exhaust Emissions Standards for New Aircraft Gas Turbine Engines and Identification Plate for...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-23

    ... kilonewtons (kN) (76 FR 45012). The EPA also proposed adopting the gas turbine engine test procedures of the... 18, 2012 (77 FR 36342), and was effective July 18, 2012. On December 31, 2012, the FAA published a final rule with a request for comments (77 FR 76842) adopting the EPA's new emissions standards in...

  8. Some inadequacies of the current human factors certification process of advanced aircraft technologies

    NASA Technical Reports Server (NTRS)

    Paries, Jean

    1994-01-01

    Automation related accidents or serious incidents are not limited to advanced technology aircraft. There is a full history of such accidents with conventional technology aircraft. However, this type of occurrence is far from sparing the newest 'glass cockpit' generation, and it even seems to be a growing contributor to its accident rate. Nevertheless, all these aircraft have been properly certificated according to the relevant airworthiness regulations. Therefore, there is a growing concern that with the technological advancement of air transport aircraft cockpits, the current airworthiness regulations addressing cockpit design and human factors may have reached some level of inadequacy. This paper reviews some aspects of the current airworthiness regulations and certification process related to human factors of cockpit design and focuses on questioning their ability to guarantee the intended safety objectives.

  9. Fiber-channel audio video standard for military and commercial aircraft product lines

    NASA Astrophysics Data System (ADS)

    Keller, Jack E.

    2002-08-01

    Fibre channel is an emerging high-speed digital network technology that combines to make inroads into the avionics arena. The suitability of fibre channel for such applications is largely due to its flexibility in these key areas: Network topologies can be configured in point-to-point, arbitrated loop or switched fabric connections. The physical layer supports either copper or fiber optic implementations with a Bit Error Rate of less than 10-12. Multiple Classes of Service are available. Multiple Upper Level Protocols are supported. Multiple high speed data rates offer open ended growth paths providing speed negotiation within a single network. Current speeds supported by commercially available hardware are 1 and 2 Gbps providing effective data rates of 100 and 200 MBps respectively. Such networks lend themselves well to the transport of digital video and audio data. This paper summarizes an ANSI standard currently in the final approval cycle of the InterNational Committee for Information Technology Standardization (INCITS). This standard defines a flexible mechanism whereby digital video, audio and ancillary data are systematically packaged for transport over a fibre channel network. The basic mechanism, called a container, houses audio and video content functionally grouped as elements of the container called objects. Featured in this paper is a specific container mapping called Simple Parametric Digital Video (SPDV) developed particularly to address digital video in avionics systems. SPDV provides pixel-based video with associated ancillary data typically sourced by various sensors to be processed and/or distributed in the cockpit for presentation via high-resolution displays. Also highlighted in this paper is a streamlined Upper Level Protocol (ULP) called Frame Header Control Procedure (FHCP) targeted for avionics systems where the functionality of a more complex ULP is not required.

  10. 77 FR 23166 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-18

    ...'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for transport airplanes and new...,'' Amendment 21-78, and subsequent Amendments 21-82 and 21-83). Among other actions, SFAR 88 (66 FR 23086, May... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in...

  11. Tentative civil airworthiness flight criteria for powered-lift transports

    NASA Technical Reports Server (NTRS)

    Hynes, C. S.; Scott, B. C.

    1976-01-01

    Representatives of the U.S., British, French, and Canadian airworthiness authorities participated in a NASA/FAA program to formulate tentative civil airworthiness flight criteria for powered-lift transports. The ultimate limits of the flight envelope are defined by boundaries in the airspeed/path-angle plane. Angle of attack and airspeed margins applied to these ultimate limits provide protection against both atmospheric disturbances and disturbances resulting from pilot actions or system variability, but do not ensure maneuvering capability directly, as the 30% speed margin does for conventional transports. Separate criteria provide for direct demonstration of adequate capability for approach path control, flare and landing, and for go-around. Demonstration maneuvers are proposed, and appropriate abuses and failures are suggested. Taken together, these criteria should permit selection of appropriate operating points within the flight envelopes for the approach, landing, and go-around flight phases which are likely to be most critical for powered-lift aircraft.

  12. A Review of Current and Prospective Factors for Classification of Civil Unmanned Aircraft Systems

    NASA Technical Reports Server (NTRS)

    Hayhurst, Kelly J.; Maddalon, Jeffrey M.; Morris, A. Terry; Neogi, Natasha; Verstynen, Harry A.

    2014-01-01

    While progress is being made on integrating unmanned aircraft systems (UAS) into our national airspace on a broad scale, much work remains to establish appropriate certification standards and operational procedures, particularly with respect to routine commercial operations. This paper summarizes research to examine the extent to which today's civil aircraft taxonomy applies to UAS, and, if needed, how that taxonomy could be amended to better cover different UAS designs and operations. Factors that shape the current taxonomy, as defined in the Federal Aviation Regulations, were assessed for applicability to UAS, potential incompatibilities were identified, and additional factors were proposed that might be useful for an updated aircraft taxonomy intended to cover UAS. The results suggest the possibility of constructing new groups in the taxonomy for UAS under a restricted category that share common airworthiness standards. Establishing distinct groups for UAS and associated standards that enable low risk operations for compensation or hire could be a timely step toward full integration. Such a step would allow the civil aviation industry and regulators to gain valuable experience with UAS while carefully controlling access and potential harm to the aviation system as a whole.

  13. Experience gained from using water and steam for bringing the operation of aircraft- and marine-derivative gas-turbine engines in compliance with environmental standards

    NASA Astrophysics Data System (ADS)

    Datsenko, V. V.; Zeigarnik, Yu. A.; Kosoi, A. S.

    2014-04-01

    Practical experience gained from using water and steam admission into the combustion chambers of aircraft- and marine-derivative gas turbines for bringing their operation in compliance with the requirements of environmental standards is described. The design and schematic modifications of combustion chambers and fuel system through which this goal is achieved are considered. The results obtained from industrial and rig tests of combustion chambers fitted with water or steam admission systems are presented.

  14. 14 CFR 375.10 - Certain foreign civil aircraft registered in ICAO member states.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... certificates of airworthiness are equal to or above the minimum standards established pursuant to the Chicago... issued or rendered valid are equal to or above the minimum standards established pursuant to the...

  15. 14 CFR 375.10 - Certain foreign civil aircraft registered in ICAO member states.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... certificates of airworthiness are equal to or above the minimum standards established pursuant to the Chicago... issued or rendered valid are equal to or above the minimum standards established pursuant to the...

  16. 14 CFR 375.10 - Certain foreign civil aircraft registered in ICAO member states.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... certificates of airworthiness are equal to or above the minimum standards established pursuant to the Chicago... issued or rendered valid are equal to or above the minimum standards established pursuant to the...

  17. Safe structures for future aircraft

    NASA Technical Reports Server (NTRS)

    Mccomb, H. G., Jr.

    1983-01-01

    The failure mechanisms, design lessons, and test equipment employed by NASA in establishing the airworthiness and crashworthiness of aircraft components for commercial applications are described. The composites test programs have progressed to medium primary structures such as stabilizers and a vertical fin. The failures encountered to date have been due to the nonyielding nature of composites, which do not diffuse loads like metals, and the presence of eccentricities, irregular shapes, stiffness changes, and discontinuities that cause tension and shear. Testing to failure, which always occurred in first tests before the design loads were reached, helped identify design changes and reinforcements that produced successful products. New materials and NDE techniques are identified, together with aircraft structural design changes that offer greater protection to the passengers, fuel antimisting agents, and landing gear systems.

  18. Aeroelastic Airworthiness Assesment of the Adaptive Compliant Trailing Edge Flaps

    NASA Technical Reports Server (NTRS)

    Herrera, Claudia Y.; Spivey, Natalie D.; Lung, Shun-fat; Ervin, Gregory; Flick, Peter

    2015-01-01

    The Adaptive Compliant Trailing Edge (ACTE) demonstrator is a joint task under the National Aeronautics and Space Administration Environmentally Responsible Aviation Project in partnership with the Air Force Research Laboratory and FlexSys, Inc. (Ann Arbor, Michigan). The project goal is to develop advanced technologies that enable environmentally friendly aircraft, such as adaptive compliant technologies. The ACTE demonstrator flight-test program encompassed replacing the Fowler flaps on the SubsoniC Aircraft Testbed, a modified Gulfstream III (Gulfstream Aerospace, Savannah, Georgia) aircraft, with control surfaces developed by FlexSys. The control surfaces developed by FlexSys are a pair of uniquely-designed unconventional flaps to be used as lifting surfaces during flight-testing to validate their structural effectiveness. The unconventional flaps required a multidisciplinary airworthiness assessment to prove they could withstand the prescribed flight envelope. Several challenges were posed due to the large deflections experienced by the structure, requiring non-linear analysis methods. The aeroelastic assessment necessitated both conventional and extensive testing and analysis methods. A series of ground vibration tests (GVTs) were conducted to provide modal characteristics to validate and update finite element models (FEMs) used for the flutter analyses for a subset of the various flight configurations. Numerous FEMs were developed using data from FlexSys and the ground tests. The flap FEMs were then attached to the aircraft model to generate a combined FEM that could be analyzed for aeroelastic instabilities. The aeroelastic analysis results showed the combined system of aircraft and flaps were predicted to have the required flutter margin to successfully demonstrate the adaptive compliant technology. This paper documents the details of the aeroelastic airworthiness assessment described, including the ground testing and analyses, and subsequent flight

  19. Technology Development, Validation, and Transfer Via the FAA Airworthiness Assurance Validation

    SciTech Connect

    Perry, R.L.

    1999-04-15

    In 1991, the Federal Aviation Administration (FAA) established an Airworthiness Assurance NDI Validation Center (AANC) at Sandia National Laboratories. Its primary mission is to support technology development, validation, and transfer to industry in order to enhance the airworthiness and improve the aircraft maintenance practices of the U.S. commercial aviation industry. The Center conducts projects in a myriad of engineering disciplines. The results are placed in the public domain so that the industry at-large can reap the benefits of FAA-funded Research and Development efforts. To support the Center's goals, the FAA/AANC has set up a hangar facility at the Albuquerque International Airport which contains a collection of transport and commuter aircraft as well as other test specimens. The facility replicates a working maintenance environment by incorporating both the physical inspection difficulties as well as the environmental factors which influence maintenance reliability.

  20. 75 FR 9753 - Airworthiness Directives; Hawker Beechcraft Corporation (Type Certificate Previously Held by...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-04

    ...We are adopting a new airworthiness directive (AD) for certain Hawker Beechcraft Corporation (type certificate previously held by Raytheon Aircraft Company) Models B300 and B300C airplanes. This AD requires you to inspect the terminal board on the circuit card rack assembly to determine if the correct bus bar is installed and replace if necessary. This AD also requires you to do an operational......

  1. Development of a Minimum Performance Standard for Hand-Held Fire Extinguishers as a Replacement for Halon 1211 on Civilian Transport Category Aircraft

    NASA Astrophysics Data System (ADS)

    Webster, Harry

    2002-08-01

    One or more Halon 1211 hand-held fire extinguishers are specified in Federal Aviation Regulation (FAR) Part 25.851 as a requirement on transport category aircraft with 31 or more seats. Halon 1211 has been linked to the destruction of the ozone layer and production of new Halon 1211 has been halted per the Montreal Protocol in 1993. The phase out of Halon 1211, as the hand-held firefighting agent of choice, for civilian transport category aircraft has necessitated the development of a Minimum Performance Standard (MPS) to evaluate replacement agents. The purpose of the MPS is to insure that there is no reduction in safety, both in terms of effectiveness in fighting onboard fires and toxicity to the passengers and crew. The MPS specifies two new tests that replacement agents must pass in addition to requiring national certifications such as provided by Underwriters Laboratories. The first test evaluates the "flooding" characteristics of the agent against a hidden in-flight fire. This test determines the ability of a streaming agent to function as a flooding agent. The second test evaluates the performance of the agent in fighting a terrorist fire scenario and the associated toxicity hazard. This test measures the agent's ability to extinguish a triple-seat fire in an aircraft cabin under in-flight conditions and the toxicity characteristics of both the neat agent and the products of decomposition. This MPS will insure that the replacement agents will meet or exceed the performance of Halon 1211 both in fighting fires and maintaining a safe breathing environment in aircraft cabins.

  2. 14 CFR 39.9 - What if I operate an aircraft or use a product that does not meet the requirements of an...

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 1 2014-01-01 2014-01-01 false What if I operate an aircraft or use a product that does not meet the requirements of an airworthiness directive? 39.9 Section 39.9 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT...

  3. Fiber Bragg grating sensing in smart composite patch repairs for aging aircraft

    NASA Astrophysics Data System (ADS)

    Kressel, I.; Botsev, Y.; Leibovich, H.; Guedj, P.; Ben-Simon, U.; Ghilai, G.; Gorbatov, Nahum; Gali, S.; Tur, Moshe

    2005-05-01

    A low spatial resolution Fiber-Bragg-Grating sensor net is proposed for real time health monitoring of bonded composite patches used for aging aircraft structural repairs. FBG reading are shown to have direct correlation with the structural integrity of the patch, making this concept attractive for airworthiness assessment of bonded repairs.

  4. 76 FR 19903 - Special Conditions: Diamond Aircraft Industry Model DA-40NG; Diesel Cycle Engine

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-04-11

    ...These special conditions are issued for the Diamond Aircraft Industry (DAI) GmbH model DA-40NG the Austro Engine GmbH model E4 aircraft diesel engine (ADE) using turbine (jet) fuel. This airplane will have a novel or unusual design feature(s) associated with the installation of a diesel cycle engine utilizing turbine (jet) fuel. The applicable airworthiness regulations do not contain adequate......

  5. Aircraft compass characteristics

    NASA Technical Reports Server (NTRS)

    Peterson, John B; Smith, Clyde W

    1937-01-01

    A description of the test methods used at the National Bureau of Standards for determining the characteristics of aircraft compasses is given. The methods described are particularly applicable to compasses in which mineral oil is used as the damping liquid. Data on the viscosity and density of certain mineral oils used in United States Navy aircraft compasses are presented. Characteristics of Navy aircraft compasses IV to IX and some other compasses are shown for the range of temperatures experienced in flight. Results of flight tests are presented. These results indicate that the characteristic most desired in a steering compass is a short period and, in a check compass, a low overswing.

  6. Electromagnetic Interference In New Aircraft

    NASA Technical Reports Server (NTRS)

    Larsen, William E.

    1991-01-01

    Report reviews plans to develop tests and standards to ensure that digital avionics systems in new civil aircraft immune to electromagnetic interference (EMI). Updated standards reflect more severe environment and vulnerabilities of modern avionics.

  7. The effects of aircraft certification rules on general aviation accidents

    NASA Astrophysics Data System (ADS)

    Anderson, Carolina Lenz

    The purpose of this study was to analyze the frequency of general aviation airplane accidents and accident rates on the basis of aircraft certification to determine whether or not differences in aircraft certification rules had an influence on accidents. In addition, the narrative cause descriptions contained within the accident reports were analyzed to determine whether there were differences in the qualitative data for the different certification categories. The certification categories examined were: Federal Aviation Regulations Part 23, Civil Air Regulations 3, Light Sport Aircraft, and Experimental-Amateur Built. The accident causes examined were those classified as: Loss of Control, Controlled Flight into Terrain, Engine Failure, and Structural Failure. Airworthiness certification categories represent a wide diversity of government oversight. Part 23 rules have evolved from the initial set of simpler design standards and have progressed into a comprehensive and strict set of rules to address the safety issues of the more complex airplanes within the category. Experimental-Amateur Built airplanes have the least amount of government oversight and are the fastest growing segment. The Light Sport Aircraft category is a more recent certification category that utilizes consensus standards in the approval process. Civil Air Regulations 3 airplanes were designed and manufactured under simpler rules but modifying these airplanes has become lengthy and expensive. The study was conducted using a mixed methods methodology which involves both quantitative and qualitative elements. A Chi-Square test was used for a quantitative analysis of the accident frequency among aircraft certification categories. Accident rate analysis of the accidents among aircraft certification categories involved an ANCOVA test. The qualitative component involved the use of text mining techniques for the analysis of the narrative cause descriptions contained within the accident reports. The Chi

  8. Stress Corrosion Crack Detection on HU-25 Guardian Aircraft

    SciTech Connect

    Blackmon, R.; Huffman, J.; Mello, C.W.; Moore, D.G.; Walkington, P.D.

    1999-02-17

    Several ultrasonic inspection methods were developed at the Federal Aviation Administration's Airworthiness Assurance NDI Validation Center (AANC) to easily and rapidly detect hidden stress corrosion cracks in all vertical windshield posts on the US Coast Guard (USCG) HU-25 Guardian aircraft. The inspection procedure locates cracks as small as 2.0 millimeters emanating from internal fastener holes and determines their length. A test procedure was developed and a baseline assessment of the USCG fleet was conducted. Inspection results on twenty-five aircraft revealed a good correlation with results made during subsequent structural disassembly and visual inspection.

  9. Unmanned reconnaissance aircraft, Predator B in flight.

    NASA Technical Reports Server (NTRS)

    2001-01-01

    Predator B unmanned reconnaissance aircraft, shown here, under NASA's Environmental Research Aircraft and Sensor Technology (ERAST) project. ALTAIR/PREDATOR B -- General Atomics Aeronautical Systems, Inc., is developing the Altair version of its Predator B unmanned reconnaissance aircraft, shown here, under NASA's Environmental Research Aircraft and Sensor Technology (ERAST) project. NASA plans to use the Altair as a technology demonstrator testbed aircraft to validate a variety of command and control technologies for unmanned aerial vehicles (UAV), as well as demonstrate the capability to perform a variety of Earth science missions. The Altair is designed to carry an 700-lb. payload of scientific instruments and imaging equipment for as long as 32 hours at up to 52,000 feet altitude. Ten-foot extensions have been added to each wing, giving the Altair an overall wingspan of 84 feet with an aspect ratio of 23. It is powered by a 700-hp. rear-mounted TPE-331-10 turboprop engine, driving a three-blade propeller. Altair is scheduled to begin flight tests in the fourth quarter of 2002, and be acquired by NASA following successful completion of those basic airworthiness tests in early 2003 for evaluation of over-the-horizon control, detect, see and avoid and other technologies required to allow UAVs to operate safely with other aircraft in the national airspace.

  10. Predicting visibility of aircraft.

    PubMed

    Watson, Andrew; Ramirez, Cesar V; Salud, Ellen

    2009-01-01

    Visual detection of aircraft by human observers is an important element of aviation safety. To assess and ensure safety, it would be useful to be able to be able to predict the visibility, to a human observer, of an aircraft of specified size, shape, distance, and coloration. Examples include assuring safe separation among aircraft and between aircraft and unmanned vehicles, design of airport control towers, and efforts to enhance or suppress the visibility of military and rescue vehicles. We have recently developed a simple metric of pattern visibility, the Spatial Standard Observer (SSO). In this report we examine whether the SSO can predict visibility of simulated aircraft images. We constructed a set of aircraft images from three-dimensional computer graphic models, and measured the luminance contrast threshold for each image from three human observers. The data were well predicted by the SSO. Finally, we show how to use the SSO to predict visibility range for aircraft of arbitrary size, shape, distance, and coloration. PMID:19462007

  11. Predicting Visibility of Aircraft

    PubMed Central

    Watson, Andrew; Ramirez, Cesar V.; Salud, Ellen

    2009-01-01

    Visual detection of aircraft by human observers is an important element of aviation safety. To assess and ensure safety, it would be useful to be able to be able to predict the visibility, to a human observer, of an aircraft of specified size, shape, distance, and coloration. Examples include assuring safe separation among aircraft and between aircraft and unmanned vehicles, design of airport control towers, and efforts to enhance or suppress the visibility of military and rescue vehicles. We have recently developed a simple metric of pattern visibility, the Spatial Standard Observer (SSO). In this report we examine whether the SSO can predict visibility of simulated aircraft images. We constructed a set of aircraft images from three-dimensional computer graphic models, and measured the luminance contrast threshold for each image from three human observers. The data were well predicted by the SSO. Finally, we show how to use the SSO to predict visibility range for aircraft of arbitrary size, shape, distance, and coloration. PMID:19462007

  12. Aircraft electromagnetic compatibility

    NASA Technical Reports Server (NTRS)

    Clarke, Clifton A.; Larsen, William E.

    1987-01-01

    Illustrated are aircraft architecture, electromagnetic interference environments, electromagnetic compatibility protection techniques, program specifications, tasks, and verification and validation procedures. The environment of 400 Hz power, electrical transients, and radio frequency fields are portrayed and related to thresholds of avionics electronics. Five layers of protection for avionics are defined. Recognition is given to some present day electromagnetic compatibility weaknesses and issues which serve to reemphasize the importance of EMC verification of equipment and parts, and their ultimate EMC validation on the aircraft. Proven standards of grounding, bonding, shielding, wiring, and packaging are laid out to help provide a foundation for a comprehensive approach to successful future aircraft design and an understanding of cost effective EMC in an aircraft setting.

  13. Aircraft electromagnetic compatibility

    NASA Astrophysics Data System (ADS)

    Clarke, Clifton A.; Larsen, William E.

    1987-06-01

    Illustrated are aircraft architecture, electromagnetic interference environments, electromagnetic compatibility protection techniques, program specifications, tasks, and verification and validation procedures. The environment of 400 Hz power, electrical transients, and radio frequency fields are portrayed and related to thresholds of avionics electronics. Five layers of protection for avionics are defined. Recognition is given to some present day electromagnetic compatibility weaknesses and issues which serve to reemphasize the importance of EMC verification of equipment and parts, and their ultimate EMC validation on the aircraft. Proven standards of grounding, bonding, shielding, wiring, and packaging are laid out to help provide a foundation for a comprehensive approach to successful future aircraft design and an understanding of cost effective EMC in an aircraft setting.

  14. 76 FR 41142 - Special Conditions; Cessna Aircraft Company Model M680 Airplane; Lithium-ion Battery Installations

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-13

    ... Aircraft Company Model M680 Airplane; Lithium-ion Battery Installations AGENCY: Federal Aviation... design feature associated with Lithium-ion batteries. The applicable airworthiness regulations do not...) T00012WI for installation of Lithium-ion batteries in the Model 680. The Model 680 is a twin-engine,...

  15. 78 FR 70848 - Special Conditions: Boeing Model 777-200, -300, and -300ER Series Airplanes; Aircraft Electronic...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-27

    ... the EFB architecture and existing airplane network systems. The applicable airworthiness regulations... interface to existing aircraft systems. The proposed network architecture is used for a diverse set of... architecture and network configuration in the Boeing Model 777- 200, -300, and -300ER series airplanes...

  16. Crack detection on HC-130H aircraft using low frequency eddy current

    SciTech Connect

    Moore, D.G.; Mihelic, J.E.; Barnes, J.D.

    1998-02-01

    An eddy current inspection method was developed at the Federal Aviation Administration`s Airworthiness Assurance NDI Validation Center (AANC) to easily and rapidly detect subsurface fatigue cracks in the wheel well fairing on the US Coast Guard (USCG) HC-130H aircraft caused by fatigue. The inspection procedure locates cracks as small as 10.2 millimeters in length at 2.54 mm below the skin surface at raised fastener sites. The test procedure developed baseline three USCG aircraft. Inspection results on the three aircraft reveals good correlation with results made during subsequent structural disassembly.

  17. Piloting considerations for terminal area operations of civil tiltwing and tiltrotor aircraft

    NASA Technical Reports Server (NTRS)

    Hindson, William S.; Hardy, Gordon H.; Tucker, George E.; Decker, William A.

    1993-01-01

    The existing body of research to investigate airworthiness, performance, handling, and operational requirements for STOL and V/STOL aircraft was reviewed for its applicability to the tiltrotor and tiltwing design concepts. The objective of this study was to help determine the needs for developing civil certification criteria for these aircraft concepts. Piloting tasks that were considered included configuration and thrust vector management, glidepath control, deceleration to hover, and engine failure procedures. Flight control and cockpit display systems that have been found necessary to exploit the low-speed operating characteristics of these aircraft are described, and beneficial future developments are proposed.

  18. Aircraft Design

    NASA Technical Reports Server (NTRS)

    Bowers, Albion H. (Inventor); Uden, Edward (Inventor)

    2016-01-01

    The present invention is an aircraft wing design that creates a bell shaped span load, which results in a negative induced drag (induced thrust) on the outer portion of the wing; such a design obviates the need for rudder control of an aircraft.

  19. Aircraft Noise

    NASA Astrophysics Data System (ADS)

    Michel, Ulf; Dobrzynski, Werner; Splettstoesser, Wolf; Delfs, Jan; Isermann, Ullrich; Obermeier, Frank

    Aircraft industry is exposed to increasing public pressure aiming at a continuing reduction of aircraft noise levels. This is necessary to both compensate for the detrimental effect on noise of the expected increase in air traffic and improve the quality of living in residential areas around airports.

  20. Airworthiness testing of medical maggots.

    PubMed

    Peck, George W; Helgeson, Sandra M; Powell, Eric D; Roth, Amanda L; Flores, Micah; Kirkup, Benjamin C

    2015-05-01

    An investigation was conducted to test and certify medicinal maggots to facilitate rapid healing of traumatic and chronic wound infections in Wounded warriors being transported onboard military aircraft. Our specific aims included (1) to test the ability of medical grade larvae to withstand the rigors of U.S. Army aeromedical certification, including tolerance to change in pressure, temperature, and humidity inside ground-based chambers; (2) to evaluate the efficacy of the medical grade larvae during a high-vibration rotary-wing medical transport flight; and (3) to gain U.S. Army aeromedical certification and U.S. Air Force safe-to-fly approval and begin the steps needed to deploy/implement the use of medicinal maggots in patient care regimes for medical airlift standard operating procedures. This report outlines the ground-based and initial air-based tests performed during the study. Maggot mortality was very low during all tests, with a mortality rate of less than 1%. Maggot growth rates in wound arenas were mixed but generally depended on temperature. Overall, the results of these tests suggest that medicinal maggots can withstand the rigors of aeromedical evacuation flights in simulated flight environments and rotary- or fixed-wing aircraft. PMID:25939116

  1. Flight Test Safety Considerations for Airborne Science Aircraft

    NASA Technical Reports Server (NTRS)

    Reynolds, Randolph S.

    1997-01-01

    Most of the scientific community that require scientific data or scientific measurements from aircraft do not understand the full implications of putting certain equipment on board high performance aircraft. It is the duty of the NASA Flight Operations personnel to ensure that all Principal Investigators who are given space on NASA flight research aircraft, comply with stringent safety requirements. The attitude of the experienced Flight operations personnel given this duty has been and remains one of insuring that the PI's experiment is allowed to be placed on the aircraft (facility) and can be operated in a manner that will obtain the expected data. This is sometimes a challenge. The success that NASA has in this regard is due to the fact that it is its own authority under public law, to certify its aircraft as airworthy. Airworthiness, fitness for flight, is a complex issue which pulls together all aspects of configuration management, engineering, quality, and flight safety. It is often the case at each NASA Center that is conducting airborne research, that unique solutions to some challenging safety issues are required. These solutions permit NASA to do things that would not be permitted by the Department of Transportation. This paper will use examples of various flight research configurations to show the necessity of a disciplined process leading up to flight test and mission implementation. All new configurations required engineering flight test but many, as noted in this paper, require that the modifications be flight tested to insure that they do not negatively impact on any part of the aircraft operational profiles. The success of these processes has been demonstrated over many years and NASA has accommodated experimental packages that cannot be flown on any other aircraft.

  2. 14 CFR 21.269 - Export airworthiness approvals.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Export airworthiness approvals. 21.269 Section 21.269 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION....269 Export airworthiness approvals. The manufacturer may issue export airworthiness approvals....

  3. 78 FR 44045 - Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-23

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... different life limits and the possibility that these same parts can be interchanged with civilian models with different life limits. The proposed actions are intended to establish a pro-rated in service...

  4. 77 FR 70114 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-23

    ... publication listed in this AD as of March 13, 2012 (77 FR 6003, February 7, 2012). ADDRESSES: For service... Register on August 20, 2012 (77 FR 50054). That NPRM proposed to require you to inspect the fuel return... this AD. We received no comments on the NPRM (77 FR 50054, August 20, 2012) or on the determination...

  5. 77 FR 6003 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-07

    ... certain other publication listed in this AD as of March 6, 2008 (73 FR 5737, January 31, 2008). ADDRESSES... proposed rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 2008-03-02, Amendment 39-15351 (73 FR... Register on November 14, 2011 (76 FR 70379). That NPRM proposed to continue to require actions of...

  6. 77 FR 50054 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-20

    ... receive about this proposed AD. Discussion In January 2012, we issued AD 2012-02-02 (77 FR 6003, February... 172S airplanes that have installed an engine fuel return system modification kit. AD 2012-02-02 (77 FR... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska and (4)...

  7. 78 FR 41277 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-10

    ... fuel vent valve's ability to vent atmospheric pressure to the main wing fuel tank during the rapid... ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not...-made part did not expand and open as large as the fluorosilicone-made part under the same pressure...

  8. 77 FR 56993 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-17

    ... published in the Federal Register on June 22, 2011 (76 FR 36395). That NPRM proposed to require replacement... FR 36395, June 22, 2011) Due to Adequacy of External Inspections Phil Ciholas requested we reconsider the NPRM (76 FR 36395, June 22, 2011) requirements and noted that even the most severe horn...

  9. 78 FR 1155 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-08

    ... 2004-21-08, amendment 39-13828 (69 FR 62396, October 26, 2004), for all Cessna Models 190, 195 (L- 126A... terminate the need for the repetitive inspections. AD 2004-21-08 (69 FR 62396, October 26, 2004) resulted... is known to be susceptible to corrosion. We issued AD 2004-21-08 (69 FR 62396, October 26, 2004)...

  10. 78 FR 20227 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-04

    .... Magnesium is known to be susceptible to corrosion. Since issuance of AD 2004- 21-08 (69 FR 62396, October 26... to revise AD 2004-21-08, amendment 39-13828 (69 FR 62396, October 26, 2004). That AD applies to the specified products. The NPRM published in the Federal Register on January 8, 2013 (78 FR 1155). That...

  11. 78 FR 23698 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-22

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will... fire extinguisher discharge tube (No. 1 engine tube). This proposed AD is prompted by the discovery... through 920169. This proposed AD is prompted by a recent event where an extinguishing test at a...

  12. 77 FR 68061 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-15

    ...: Discussion On May 14, 2012, at 77 FR 28328, the Federal Register published our notice of proposed rulemaking... NPRM (77 FR 28328, May 14, 2012). FAA's Determination We have reviewed the relevant information and... 12866; (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR...

  13. 77 FR 28328 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-14

    ... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation... deck tunnel assembly. This proposed AD is prompted by the discovery of cracks in T/R pylons. The.../R pylon and, if present, to repair the T/R Pylon and install a doubler on the aft shear deck...

  14. 78 FR 17865 - Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-25

    ... INFORMATION: Discussion On March 27, 2008, we issued AD 2008-07-11, Amendment 39-15452 (73 FR 18433, April 4.... AD 2008-07-11, Amendment 39-15452 (73 FR 18433, April 4, 2008) was based on results of a full-scale.... On February 8, 2013, we issued AD 2012-26-16, Amendment 39-17311 (78 FR 11572, February 19, 2013)....

  15. 77 FR 19061 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-30

    ..., 2012 (77 FR 2238). That NPRM proposed to correct an unsafe condition for the specified products. The... opportunity to participate in developing this AD. We received no comments on the NPRM (77 FR 2238, January 17... proposed in the NPRM (77 FR 2238, January 17, 2012) for correcting the unsafe condition; and Do not add...

  16. 78 FR 41285 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-10

    ... to the specified products. The NPRM was published in the Federal Register on April 26, 2013 (78 FR... participate in developing this AD. We received no comments on the NPRM (78 FR 24689, April 26, 2013) or on the... (78 FR 24689, April 26, 2013) for correcting the unsafe condition; and Do not add any...

  17. 78 FR 11572 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-19

    ... certain other publication listed in this AD as of August 19, 2009 (74 FR 34213, July 15, 2009). ADDRESSES... October 22, 2012 (77 FR 64442), which proposed to supersede AD 2009-14-13, Amendment 39-15963 (74 FR 34213, July 15, 2009). Since we issued AD 2009-14-13, Amendment 39-15963 (74 FR 34213, July 15, 2009),...

  18. 78 FR 37701 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-24

    ... (78 FR 14729), and proposed to supersede AD 2011-01-14, Amendment 39-16571 76 FR 5467; February 1... minor changes: Are consistent with the intent that was proposed in the NPRM (78 FR 14729, March 7, 2013... already proposed in the NPRM (78 FR 14729, March 7, 2013). We also determined that these changes will...

  19. 77 FR 42225 - Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-18

    ...-13, Amendment 39-15963 (74 FR 34213, July 15, 2009). That AD required actions intended to address an unsafe condition on the products listed above. Since we issued AD 2009-14-13, Amendment 39-15963 (74 FR... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4)...

  20. 77 FR 64442 - Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-22

    ... the specified products, which was published in the Federal Register on July 18, 2012 (77 FR 42225). That earlier NPRM (77 FR 42225, July 18, 2012) proposed to require actions intended to address the unsafe condition for the products listed above. Since that NPRM (77 FR 42225, July 18, 2012), was...

  1. 78 FR 58874 - Airworthiness Directives; PILATUS AIRCRAFT LTD. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-25

    ... Register on July 17, 2013 (78 FR 42723). That NPRM proposed to correct an unsafe condition for the... AD. We received no comments on the NPRM (78 FR 42723, July 17, 2013) or on the determination of the... determined that these minor changes: Are consistent with the intent that was proposed in the NPRM (78...

  2. 78 FR 60656 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-02

    ...@faa.gov . SUPPLEMENTARY INFORMATION: Discussion On April 22, 2013, at 78 FR 23698, the Federal... opportunity to participate in developing this AD, but we received no comments on the NPRM (78 FR 23698, April... Executive Order 12866; (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44...

  3. 76 FR 64793 - Airworthiness Directives; Diamond Aircraft Industries Powered Sailplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-19

    ... Register on August 8, 2011 (76 FR 48047). That NPRM proposed to correct an unsafe condition for the..., containing instructions to test and inspect the air brake control system torsion tube for corrosion damage.... We received no comments on the NPRM (76 FR 48047, August 8, 2011) or on the determination of the...

  4. 77 FR 60062 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-02

    ... replacement of the engine oil pressure switch. FAA's Determination We are proposing this AD because we... Compliance We estimate that this proposed AD affects 6,155 airplanes of U.S. registry. ] We estimate the... and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in...

  5. 78 FR 38552 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-27

    ... proposed in the SNPRM (78 FR 14726, March 7, 2013). Costs of Compliance We estimate that this AD affects 6... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... effective date of this AD), do not install a P/N 77041 engine oil pressure switch on any affected...

  6. 78 FR 14726 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-07

    ... maintenance practice and does not affect this rulemaking activity. FAA's Determination We are proposing this... inspection of the engine oil pressure switch and, if applicable, replacement with an improved engine oil pressure switch. Since we issued the existing AD, we have received new reports of internal failure of...

  7. 77 FR 69742 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-21

    ...; telephone: 888-835-9377; email: chip@sijet.com ; Internet: http://www.sijet.com/r-stol-high . You may review...-4148. Examining the AD Docket You may examine the AD docket on the Internet at http://www.regulations.... That SNPRM published in the Federal Register on August 23, 2012 (77 FR 50954). The original NPRM (75...

  8. 77 FR 29863 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-21

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska...-referenced airplanes with cantilever metal wings. We are issuing this AD to correct the unsafe condition on..., T210M, 210N, T210N, P210N, 210R, T210R, and P210R airplanes with cantilever metal wings. The...

  9. 77 FR 41889 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-17

    ...'' under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect... references Sikorsky Maintenance Manual Temporary Revision No. 63-50, (TR 63-50), and Temporary Revision No. 5-104 (TR 5-104), both dated December 22, 2011. TR 63-50 adds the MGB inspection procedures to...

  10. 77 FR 26156 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-03

    ... 19, 2012 (77 FR 2659). That NPRM proposed to require an inspection of the torque lug and surrounding... comments on the NPRM (77 FR 2659, January 19, 2012) or on the determination of the cost to the public... of the NPRM (77 FR 2659, January 19, 2012) as paragraph (h) of this final rule. We also revised...

  11. 77 FR 2659 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-19

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... corrosion, cracks, dents, bent areas, damaged or missing paint or primer, or ] wear on the metal), and of..., cracks, dents, bent areas, damaged or missing paint or primer, or wear on the metal), and of the...

  12. 77 FR 45979 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-02

    ... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation... failures that may lead to failure of the horizontal stabilator control system and could result in loss of.... Discussion We received reports of control cable assembly failures that may lead to failure of the...

  13. 77 FR 31169 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-25

    ... AD 80-11-06, amendment 39-3776 (45 FR 35309, May 27, 1980). That AD applies to the specified products. The NPRM published in the Federal Register on March 9, 2012 (77 FR 14316). The NPRM proposed to retain all requirements of AD 80-11-06, amendment 39- 3776 (45 FR 35309, May 27, 1980) and clarify the...

  14. 77 FR 21402 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-10

    ... nicholas.faust@faa.gov . SUPPLEMENTARY INFORMATION: Discussion On October 26, 2011, at 76 FR 66209, the... 12866; (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034...) manufactured with mislocated aluminum wire mesh, leaving portions of the graphite torque tube (spar)...

  15. 78 FR 32349 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-30

    ... Register on February 11, 2013 (78 FR 9636). The original NPRM (77 FR 59146, September 26, 2012) proposed to... received no comments on the SNPRM (78 FR 9636, February 11, 2013) or on the determination of the cost to... these minor changes: Are consistent with the intent that was proposed in the SNPRM (78 FR 9636,...

  16. 78 FR 9636 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-11

    ... Federal Register on September 26, 2012 (77 FR 59146). That NPRM proposed to require an inspection to... conditioner; and return of replaced brushes to Cessna. Actions Since Previous NPRM (77 FR 59146, September 26, 2012) Was Issued Since we issued the previous NPRM (77 FR 59146, September 26, 2012), Cessna...

  17. 77 FR 59146 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-26

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... contacting the commutator causing sparks and consequent fire and/or smoke in the tailcone with no means to... their limits, which could result in the rivet in the brush contacting the commutator causing sparks...

  18. 77 FR 68057 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-15

    ...: Discussion On March 29, 2012, at 77 FR 18969, the Federal Register published our notice of proposed... Safety Board, commented that they support the NPRM (77 FR 18969, March 29, 2012). FAA's Determination We... Policies and Procedures (44 FR 11034, February 26, 1979); (3) Will not affect intrastate aviation in...

  19. 77 FR 18969 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-29

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will... the windshield that resulted in unintended movement of the engine control levers from the forward... operators may incur the following costs in order to comply with this AD. To replace the engine control...

  20. 77 FR 65148 - Airworthiness Directives; Intertechnique Aircraft Systems

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-25

    ... rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not... against hypoxia and possibly resulting in unconsciousness of the affected flightcrew member and consequent... against hypoxia of the affected flight crew member, possibly resulting in unconsciousness and...

  1. 78 FR 44048 - Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-23

    .... Discussion On October 26, 2005, we issued AD 2005-22-01, amendment 39-14345 (70 FR 61721) for Sikorsky Model... the MRH pilot, P/N 76103-08003-101, with an MRH pilot, P/ N 76103-08003-102, would require about 0.7.... Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034,...

  2. 78 FR 67009 - Airworthiness Directives; Sikorsky Aircraft Corporation (Sikorsky) Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-08

    ...-7763; email nicholas.faust@faa.gov . SUPPLEMENTARY INFORMATION: Discussion On June 20, 2013, at 78 FR... opportunity to participate in developing this AD, but we did not receive any comments on the NPRM (78 FR 37160... Executive Order 12866; (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44...

  3. 78 FR 42417 - Airworthiness Directives; Pilatus Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-16

    ...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect... street address for the Docket Office (telephone (800) 647-5527) is in the ADDRESSES section. Comments... the inspection required in paragraph (f)(1) of this AD, before further fight, contact PILATUS...

  4. 78 FR 76040 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-16

    ... this AD as of February 14, 2000 (64 FR 72524, December 28, 1999). ADDRESSES: For service information... (NPRM) to amend 14 CFR part 39 to revise AD 99-26-19, Amendment 39-11479 (64 FR 72524, December 28, 1999... Register on August 13, 2013 (78 FR 49221). The NPRM proposed to retain all requirements of AD...

  5. 78 FR 49221 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-13

    ... proposed AD. Discussion On December 16, 1999, we issued AD 99-26-19, Amendment 39-11479 (64 FR 72524... airplanes were inadvertently omitted from the applicability of AD 99-01-05, Amendment 39-10972 (63 FR 72132... FR 29965, May 25, 1993), which previously included J-2 series airplanes in the Applicability...

  6. 77 FR 52205 - Airworthiness Directives; Univair Aircraft Corporation Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-29

    ... (NPRM) to amend 14 CFR part 39 to supersede AD 52-02-02 (21 FR 9447, December 4, 1956). That AD applies to the specified products. The NPRM published in the Federal Register on April 14, 2011 (76 FR 20894... the proposal (76 FR 20894, April 14, 2011) and the FAA's response to each comment. Request To...

  7. 78 FR 28125 - Airworthiness Directives; Twin Commander Aircraft LLC Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-14

    ... referenced service information at the FAA, Small Airplane Directorate, 901 Locust, Kansas City, Missouri... the rule and of applicable statutes, to fit regulatory and informational requirements to the scale of... the rationale for their actions. The RFA covers a wide-range of small entities, including...

  8. 78 FR 35110 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-12

    ... rulemaking (NPRM) to amend 14 CFR part 39 to supersede AD 82-16-05 R1, amendment 39-5278 (51 FR 11707, April... September 18, 2012 (77 FR 57534). The NPRM included a detailed inspection that involved disassembling the v... part surfaces and tight cracks corrode faster than open surfaces.) The AD, 2000-01-16 (65 FR...

  9. 77 FR 41937 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-17

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... airspeed. This proposed AD would require inspecting certain logic modules to determine if certain cabin... in the current supplied by the cabin altitude logic module. The over-current module senses the...

  10. 77 FR 42455 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-19

    ... and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... at any time located on the left cabin panel, adjacent to the front seat, to the instrument panel. We... airplanes with magneto switches located on the left cabin panel, adjacent to the front seat, were caused...

  11. 78 FR 37448 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-21

    ... specified products. That ] NPRM published in the Federal Register on December 21, 2012 (77 FR 75590). That...), requested we withdraw the NPRM (77 FR 75590, December 21, 2012) because it is unnecessary, does not add to... (77 FR 75590, December 21, 2012) for correcting the unsafe condition; and Do not add any...

  12. 77 FR 75590 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-21

    ... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... skid occurs, a severe oscillatory yawing motion or ``wheel walk'' may develop, which could result in... Condition This AD was prompted by reports that during maximum braking, if the brakes lock up and a...

  13. 78 FR 9796 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-12

    ... Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are... December 5, 2012 (77 FR 72250). That NPRM proposed to require you to install the forward and aft fuel... (77 FR 72250, December 5, 2012) or on the determination of the cost to the public. Conclusion...

  14. 77 FR 16432 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-21

    ... Company Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Final rule. SUMMARY: We are... NPRM was published in the Federal Register on December 30, 2011 (76 FR 82205). That NPRM proposed to... received. The National Transportation Safety Board supports the NPRM (76 FR 82205, December 30,...

  15. 76 FR 70379 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-11-14

    .... Discussion On January 22, 2008, we issued AD 2008-03-02, Amendment 39-15351 (73 FR 5737, January 31, 2008... Issued Since we issued AD 2008-03-02 (73 FR 5737, January 31, 2008), we received a field report of a fuel... (73 FR 5737, January 31, 2008). This proposed AD would add airplanes to the applicability statement...

  16. 77 FR 72778 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-12-06

    ... in the Federal Register on August 22, 2012 (77 FR 50644). That NPRM proposed to require inspection of... brushes. Actions Since Previous NPRM Was Issued Since we issued the previous NPRM (77 FR 50644, August 22... public the opportunity to comment on the previous NPRM (77 FR 50644, August 22, 2012). The...

  17. 78 FR 24343 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-25

    ... apply to the specified products. That SNPRM published in the Federal Register on December 6, 2012 (77 FR 72778). The original NPRM (77 FR 50644, August 22, 2012) proposed to require inspection of the number of... with the intent that was proposed in the SNPRM (77 FR 72778, December 6, 2012) for correcting...

  18. 78 FR 51121 - Airworthiness Directives; Piper Aircraft, Inc.

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-20

    ... 71-21-08, Amendment 39-1312 (36 FR 19572, October 8, 1971) currently requires replacement of the fuel... proposed AD. Discussion On September 29, 1971, we issued AD 71-21-08, Amendment 39-1312 (36 FR 19572..., Amendment 39-1312 (36 FR 19572, October 8, 1971), a safety event in 2011 caused the loss of a Model PA-...

  19. 78 FR 26556 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-07

    ... specified products. That NPRM published in the Federal Register on July 19, 2012 (77 FR 42455). That NPRM..., rotary-style switches. Because of the comments received on the NPRM (77 FR 42455, July 19, 2012), the FAA... the concerns identified by the public during the NPRM (77 FR 42455, July 19, 2012) comment...

  20. 78 FR 24985 - Airworthiness Directives; Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-29

    ... . SUPPLEMENTARY INFORMATION: AD 2004-21-08 R1, amendment 39-17400 (78 FR 20227, April 4, 2013), currently requires... stated in the comments section that we received no comments on the NPRM (78 FR 1155, January 8, 2013). We... comments on the NPRM (78 FR 1155, January 8, 2013) or on the determination of the cost to the public.''...

  1. 77 FR 56581 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-13

    ... of the Regional Counsel, Southwest Region, 2601 Meacham Blvd., Room 663, Fort Worth, Texas 76137. FOR... 10, 2009 (74 FR 65496). The NPRM proposed revising the RFM SA S92A-RFM-003, Part 1, Section 1... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3....

  2. 78 FR 72598 - Airworthiness Directives; British Aerospace Regional Aircraft Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-03

    ... Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska, and (4) Will... product. The MCAI describes the unsafe condition as stress corrosion cracking of the main landing gear.... The subsequent investigation revealed stress corrosion cracking of the MLG yoke pintle housing as...

  3. 78 FR 4053 - Airworthiness Directives; PILATUS Aircraft Ltd. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-01-18

    ... not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26... describes the unsafe condition as cracks in the engine mount fittings caused by stress corrosion. We are... are caused by stress corrosion. It is possible for stress corrosion cracks to occur on engine...

  4. 78 FR 57104 - Airworthiness Directives; Diamond Aircraft Industries Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-17

    ... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation... Model DA 40 airplanes, serial numbers 40.006 through 40.009, 40.011 through 40.1071, and 40.1073...

  5. 77 FR 37827 - Airworthiness Directives; The Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-25

    ... Rulemaking On January 28, 2011, we issued AD 2011-03-16, Amendment 39-16600 (76 FR 8607, February 15, 2011... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska...) generator overvoltage events. This proposed AD would require replacing the auxiliary power unit...

  6. 77 FR 57994 - Airworthiness Directives; The Cessna Aircraft Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-19

    ... published in the Federal Register on June 25, 2012 (77 FR 37827). That NPRM proposed to require replacing... opportunity to participate in developing this AD. We received no comments on the NPRM (77 FR 37827, June 25... 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR...

  7. The 1991 International Conference on Aging Aircraft and Structural Airworthiness

    NASA Technical Reports Server (NTRS)

    Harris, Charles E. (Editor)

    1992-01-01

    Technical sessions of the conference included structural performance, nondestructive evaluation, maintenance and repair, international activities, and commuter airlines. Each session was organized to provide a well-rounded view of the subject from the industry, regulatory, and research perspective. Thirty-four presentations were given by the international technical community.

  8. 77 FR 49710 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-17

    ... relating to the ERB on this and similar model helicopters. AD 82-17-03, issued July 30, 1982 (47 FR 35469... July 30, 1981). AD 2003-04-15, issued February 14, 2003 (68 FR 8994, February 27, 2003), requires... October 26, 2011, at 76 FR 66205, the Federal Register published our notice of proposed rulemaking...

  9. 78 FR 17591 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-22

    ...: Manager, Commercial Technical Support, mailstop s581a, 6900 Main St., Stratford, CT; telephone (203) 383... Internet at http://www.regulations.gov or in person at the Docket Operations Office between 9 a.m. and 5 p... INFORMATION: Discussion On February 3, 2012, at 77 FR 5418, the Federal Register published our notice...

  10. 77 FR 5418 - Airworthiness Directives; Sikorsky Aircraft Corporation Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-03

    ...'' address between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. Examining the AD Docket... Operations Office between 9 a.m. and 5 p.m., Monday through Friday, except Federal holidays. The AD docket..., mailstop s581a, 6900 Main St., Stratford, CT; telephone (203) 383-4866; email tsslibrary@sikorsky.com ,...

  11. 76 FR 75442 - Airworthiness Directives; Quest Aircraft Design, LLC Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-02

    ... Order 12866, (2) Is not a ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034..., LLC (Quest) Model Kodiak 100 airplanes. This AD requires you to inspect the torque of the inertial particle separator (IPS) bolts; correct the torque, if necessary; replace the IPS bolts with new IPS...

  12. 76 FR 60367 - Airworthiness Directives; Piper Aircraft, Inc. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-29

    ... AD as of July 24, 2009 (74 FR 29118, June 19, 2009). ADDRESSES: For service information identified in... 14 CFR part 39 to revise AD 2009-13-06, amendment 39-15944 (74 FR 29118, June 19, 2009). That AD applies to the specified products. The NPRM published in the Federal Register on May 20, 2011 (76 FR...

  13. 78 FR 9789 - Airworthiness Directives; Schweizer Aircraft Corporation

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-12

    ..., 2012, at 77 FR 34281, the Federal Register published our notice of proposed rulemaking (NPRM), which... NPRM (77 FR 34281, June 11, 2012). FAA's Determination We have reviewed the relevant information and... ``significant rule'' under DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); (3) Will...

  14. 78 FR 7642 - Airworthiness Directives; Piper Aircraft, Inc.

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-04

    ... FR 45979). That NPRM proposed to require inspections of the stabilator control system and replacement... proposed in the NPRM (77 FR 45979, August 2, 2012) for correcting the unsafe condition; and Do not add any additional burden upon the public than was already proposed in the NPRM (77 FR 45979, August 2, 2012)....

  15. 150 Passenger Commercial Aircraft

    NASA Technical Reports Server (NTRS)

    Bucovsky, Adrian; Romli, Fairuz I.; Rupp, Jessica

    2002-01-01

    It has been projected that the need for a short-range mid-sized, aircraft is increasing. The future strategy to decrease long-haul flights will increase the demand for short-haul flights. Since passengers prefer to meet their destinations quickly, airlines will increase the frequency of flights, which will reduce the passenger load on the aircraft. If a point-to-point flight is not possible, passengers will prefer only a one-stop short connecting flight to their final destination. A 150-passenger aircraft is an ideal vehicle for these situations. It is mid-sized aircraft and has a range of 3000 nautical miles. This type of aircraft would market U.S. domestic flights or inter-European flight routes. The objective of the design of the 150-passenger aircraft is to minimize fuel consumption. The configuration of the aircraft must be optimized. This aircraft must meet CO2 and NOx emissions standards with minimal acquisition price and operating costs. This report contains all the work that has been performed for the completion of the design of a 150 passenger commercial aircraft. The methodology used is the Technology Identification, Evaluation, and Selection (TIES) developed at Georgia Tech Aerospace Systems Design laboratory (ASDL). This is an eight-step conceptual design process to evaluate the probability of meeting the design constraints. This methodology also allows for the evaluation of new technologies to be implemented into the design. The TIES process begins with defining the problem with a need established and a market targeted. With the customer requirements set and the target values established, a baseline concept is created. Next, the design space is explored to determine the feasibility and viability of the baseline aircraft configuration. If the design is neither feasible nor viable, new technologies can be implemented to open up the feasible design space and allow for a plausible solution. After the new technologies are identified, they must be evaluated

  16. Emissions from queuing aircraft

    SciTech Connect

    Segal, H.

    1980-01-01

    The ability of the FAA (U.S. Federal Aviation Administration) Simplex mathematical model, which employs a simple point-source algorithm with provisions for selecting a particular plume height and initial box size for each aircraft being analyzed, to predict air quality through modeling emissions released from queuing aircraft was verified by measurements of carbon monoxide emissions from such aircraft during a five-day period at Los Angeles International Airport. The model predicted carbon monoxide concentrations of 4 ppm (National Ambient Air Quality Standard limit value is 35 ppm) at expected populated locations during the highest activity hour monitored. This study should also apply to other engine exhaust gases such as NO/sub x/.

  17. IDENTIFICATION OF AIRCRAFT HAZARDS

    SciTech Connect

    K.L. Ashley

    2005-03-23

    Aircraft hazards were determined to be potentially applicable to a repository at Yucca Mountain in the ''Monitored Geological Repository External Events Hazards Screening Analysis'' (BSC 2004, Section 6.4.1). That determination was conservatively based on limited knowledge of flight data in the area of concern and on crash data for aircraft of the type flying near Yucca Mountain. The purpose of this report is to identify specific aircraft hazards that may be applicable to a Monitored Geologic Repository (MGR) at Yucca Mountain using NUREG-0800, ''Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants'' (NRC 1987, Section 3.5.1.6), as guidance for the inclusion or exclusion of identified aircraft hazards. NUREG-0800 is being used here as a reference because some of the same considerations apply. The intended use of this report is to provide inputs for further screening and analysis of the identified aircraft hazards based on the criteria that apply to Category 1 and 2 event sequence analyses as defined in 10 CFR 63.2 (see Section 4). The scope of this technical report includes the evaluation of military, private, and commercial use of airspace in the 100-mile regional setting of the MGR at Yucca Mountain with the potential for reducing the regional setting to a more manageable size after consideration of applicable screening criteria (see Section 7).

  18. Identification of Aircraft Hazards

    SciTech Connect

    K. Ashley

    2006-12-08

    Aircraft hazards were determined to be potentially applicable to a repository at Yucca Mountain in ''Monitored Geological Repository External Events Hazards Screening Analysis'' (BSC 2005 [DIRS 174235], Section 6.4.1). That determination was conservatively based upon limited knowledge of flight data in the area of concern and upon crash data for aircraft of the type flying near Yucca Mountain. The purpose of this report is to identify specific aircraft hazards that may be applicable to a monitored geologic repository (MGR) at Yucca Mountain, using NUREG-0800, ''Standard Review Plan for the Review of Safety Analysis Reports for Nuclear Power Plants'' (NRC 1987 [DIRS 103124], Section 3.5.1.6), as guidance for the inclusion or exclusion of identified aircraft hazards. The intended use of this report is to provide inputs for further screening and analysis of identified aircraft hazards based upon the criteria that apply to Category 1 and Category 2 event sequence analyses as defined in 10 CFR 63.2 [DIRS 176544] (Section 4). The scope of this report includes the evaluation of military, private, and commercial use of airspace in the 100-mile regional setting of the repository at Yucca Mountain with the potential for reducing the regional setting to a more manageable size after consideration of applicable screening criteria (Section 7).

  19. 76 FR 3856 - Airworthiness Directives; The Boeing Company Model 737-100, -200, -200C, -300, -400, and -500...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-21

    ..., replacing the fuel pump power control relays for the main, center and auxiliary tanks, as applicable, with...'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for transport airplanes and new... fuel boost pumps, the center tank fuel boost pumps, and for certain airplanes, the auxiliary tank...

  20. 75 FR 81508 - Airworthiness Directives; The Boeing Company Model 777-200, -200LR, -300, and -300ER Series...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-12-28

    ...: You may send comments by any of the following methods: Federal eRulemaking Portal: Go to http://www...'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for transport airplanes and new... repairing (cleaning of applicable components with solvent) or replacing (replacing applicable...

  1. 75 FR 12464 - Airworthiness Directives; McDonnell Douglas Corporation Model MD-11 and MD-11F Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-16

    ...'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for transport airplanes and new... may review copies of the referenced service information at the FAA, Transport Airplane Directorate... fuel tank explosions on several large transport airplanes, including the adequacy of...

  2. 75 FR 60655 - Airworthiness Directives; Airbus Model A330-201, -202, -203, -223, and -243 Airplanes; Airbus...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-01

    ... Inspection Requirements'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for... Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will not have a significant economic... power unit (APU) bleed leak detection system could result in overheat of the fuel tank located in...

  3. STOL Aircraft

    NASA Technical Reports Server (NTRS)

    1988-01-01

    Michael E. Fisher, President of AeroVisions International, has introduced the Culex light twin engine aircraft which offers economy of operation of a single engine plane, the ability to fly well on one engine, plus the capability of flying from short, unimproved fields of takeoff and landing distances less than 35 feet. Key element of design is an airfoil developed by Langley. Culex was originally intended to be factory built aircraft for special utility markets. However, it is now offered as a build-it-yourself kit plane.

  4. Ground-simulation investigations of VTOL airworthiness criteria for terminal-area operations

    NASA Technical Reports Server (NTRS)

    Lebacqz, J. V.; Decker, W. A.; Alderete, T. S.; Scott, B. C.; Harper, P. J. G.; Chung, W. W.

    1990-01-01

    Several ground-based simulation experiments undertaken to investigate concerns related to tilt-rotor aircraft airworthiness were conducted. The experiments were conducted on the National Aeronautics and Space Administration (NASA) Ames Research Center's Vertical Motion Simulator, which permits simulation of a wide variety of aircraft with a high degree of fidelity of motion cueing. Variations in conversion/deceleration profile, type of augmentation or automation, level of display assistance, and meteorological conditions were considered in the course of the experiments. Certification pilots from the Federal Aviation Administration (FAA) and the Civil Aviation Authority (CAA) participated, in addition to NASA research pilots. The setup of these experiments on the simulator is summarized, and some of the results highlighted.

  5. AACE: an innovative partnership to enhance aircraft safety

    NASA Astrophysics Data System (ADS)

    Shurtleff, William W.

    1999-01-01

    The Federal Aviation Administration established the Airworthiness Assurance Center of Excellence (AACE) in September 1997, through a cooperative agreement grant with Iowa State University (ISU) and The Ohio State University (OSU). A technical support contract with the Center is now in place as well. Initially the Center has five areas of concentration supporting advances in airworthiness assurance. These are 1. Maintenance, inspection, and repair, 2. Propulsion and fuel systems safety, 3. Crashworthiness, 4. Advanced materials, and 5. Landing gear systems performance and safety. AACE has nine core members who provide guidance to the Program Management Office at ISU/OSU through a Board of Directors. The core members are: Arizona State University, Iowa State University, Northwestern University, The Ohio State University, University of Dayton, University of Maryland, University of California - Los Angeles, Wichita State University, and Sandia National Laboratories. The organization also includes numerous academic affiliates, industry partners, government laboratories and other organizations. The Center now has over thirty technical projects supporting technical advances in airworthiness assurance. All these projects have industry guidance and support. This paper discusses the current technical program of the center and the highlights of the five-year plan for technical work. Also included is a description of the factors that make the Center an innovative partnership to promote aircraft safety.

  6. Aircraft cybernetics

    NASA Technical Reports Server (NTRS)

    1977-01-01

    The use of computers for aircraft control, flight simulation, and inertial navigation is explored. The man-machine relation problem in aviation is addressed. Simple and self-adapting autopilots are described and the assets and liabilities of digital navigation techniques are assessed.

  7. Aircraft noise prediction

    NASA Astrophysics Data System (ADS)

    Filippone, Antonio

    2014-07-01

    This contribution addresses the state-of-the-art in the field of aircraft noise prediction, simulation and minimisation. The point of view taken in this context is that of comprehensive models that couple the various aircraft systems with the acoustic sources, the propagation and the flight trajectories. After an exhaustive review of the present predictive technologies in the relevant fields (airframe, propulsion, propagation, aircraft operations, trajectory optimisation), the paper addresses items for further research and development. Examples are shown for several airplanes, including the Airbus A319-100 (CFM engines), the Bombardier Dash8-Q400 (PW150 engines, Dowty R408 propellers) and the Boeing B737-800 (CFM engines). Predictions are done with the flight mechanics code FLIGHT. The transfer function between flight mechanics and the noise prediction is discussed in some details, along with the numerical procedures for validation and verification. Some code-to-code comparisons are shown. It is contended that the field of aircraft noise prediction has not yet reached a sufficient level of maturity. In particular, some parametric effects cannot be investigated, issues of accuracy are not currently addressed, and validation standards are still lacking.

  8. Development of a biaxial test facility for structural evaluation of aircraft fuselage panels

    SciTech Connect

    Roach, D.; Walkington, P.; Rice, T.

    1998-03-01

    The number of commercial airframes exceeding twenty years of service continues to grow. An unavoidable by-product of aircraft use is that crack and corrosion flaws develop throughout the aircraft`s skin and substructure elements. Economic barriers to the purchase of new aircraft have created an aging aircraft fleet and placed even greater demands on efficient and safe repair methods. Composite doublers, or repair patches, provide an innovative repair technique which can enhance the way aircraft are maintained. Instead of riveting multiple steel or aluminum plates to facilitate an aircraft repair, it is now possible to bond a single Boron-Epoxy composite doubler to the damaged structure. The composite doubler repair process produces both engineering and economic benefits. The FAA`s Airworthiness Assurance Center at Sandia National Labs completed a project to introduce composite doubler repair technology to the commercial aircraft industry. This paper focuses on a specialized structural test facility which was developed to evaluate the performance of composite doublers on actual aircraft structure. The facility can subject an aircraft fuselage section to a combined load environment of pressure (hoop stress) and axial, or longitudinal, stress. The tests simulate maximum cabin pressure loads and use a computerized feedback system to maintain the proper ratio between hoop and axial loads. Through the use of this full-scale test facility it was possible to: (1) assess general composite doubler response in representative flight load scenarios, and (2) verify the design and analysis approaches as applied to an L-1011 door corner repair.

  9. Aircraft accidents : method of analysis

    NASA Technical Reports Server (NTRS)

    1929-01-01

    This report on a method of analysis of aircraft accidents has been prepared by a special committee on the nomenclature, subdivision, and classification of aircraft accidents organized by the National Advisory Committee for Aeronautics in response to a request dated February 18, 1928, from the Air Coordination Committee consisting of the Assistant Secretaries for Aeronautics in the Departments of War, Navy, and Commerce. The work was undertaken in recognition of the difficulty of drawing correct conclusions from efforts to analyze and compare reports of aircraft accidents prepared by different organizations using different classifications and definitions. The air coordination committee's request was made "in order that practices used may henceforth conform to a standard and be universally comparable." the purpose of the special committee therefore was to prepare a basis for the classification and comparison of aircraft accidents, both civil and military. (author)

  10. Low-voltage radiography on aircraft composite doublers

    SciTech Connect

    Moore, D.G.; Murray, J.D.

    1997-11-01

    Composite doublers are gaining popularity for their ability to repair and reinforce commercial aircraft structures and it is anticipated that the potential cost savings may spur wider use of this technology. But before composite doublers can be accepted by the civil aviation industry, inspection techniques must be developed to verify the integrity of the doubler and the parent material under the doubler. The Federal Aviation Administration Airworthiness Assurance NDI Validation Center (AANC) is currently developing test methods to inspect aircraft structures under composite doublers using low kilovoltage radiography. This paper documents the radiographic techniques developed by the AANC which have been found to give the best contrast of the radiographic image with reduced image distortion.

  11. 40 CFR 87.71 - Compliance with gaseous emission standards.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... PROGRAMS (CONTINUED) CONTROL OF AIR POLLUTION FROM AIRCRAFT AND AIRCRAFT ENGINES Test Procedures for Engine Exhaust Gaseous Emissions (Aircraft and Aircraft Gas Turbine Engines) § 87.71 Compliance with gaseous emission standards. Compliance with each gaseous emission standard by an aircraft engine shall...

  12. 40 CFR 87.71 - Compliance with gaseous emission standards.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... PROGRAMS (CONTINUED) CONTROL OF AIR POLLUTION FROM AIRCRAFT AND AIRCRAFT ENGINES Test Procedures for Engine Exhaust Gaseous Emissions (Aircraft and Aircraft Gas Turbine Engines) § 87.71 Compliance with gaseous emission standards. Compliance with each gaseous emission standard by an aircraft engine shall...

  13. 77 FR 44429 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-30

    ...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect... engine operation, engine misfire, in-flight engine shutdown, and forced landing. We are issuing this AD... shutdown and forced landing, damage to the aeroplane and injury to occupants. To address this...

  14. 75 FR 70098 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-11-17

    ... Register on May 21, 2010 (75 FR 28504). That NPRM proposed to correct an unsafe condition for the specified... applies to a different group of products. On October 4, 2010, AD 2010- 20-23, Amendment 39-16458 (75 FR... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a...

  15. 77 FR 1626 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engine

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-01-11

    ...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect... deviation in the manufacturing process of certain part number 888164 crankshafts that may cause cracks on the surface of the crankshaft on the power take off side, which could lead to failure of...

  16. 75 FR 50865 - Airworthiness Directives; Various Aircraft Equipped With Rotax Aircraft Engines 912 A Series Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-08-18

    ... (75 FR 32315). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and (3) Will not have a significant... may review copies of the service information incorporated by reference for this AD at the FAA,...

  17. A STOL airworthiness investigation using a simulation of an augmentor wing transport. Volume 1: Summary of results and airworthiness implications

    NASA Technical Reports Server (NTRS)

    Stapleford, R. L.; Heffley, R. K.; Hynes, C. S.; Scott, B. C.

    1974-01-01

    A simulator study of STOL airworthiness criteria was conducted using a model of an augmentor wing transport. The approach, flare and landing, go-around, and takeoff phases of flight were investigated. The results are summarized and possible implications with regard to airworthiness criteria are discussed. The results provide a data base for future STOL airworthiness requirements and a preliminary indication of potential problem areas. The results are also compared to the results from an earlier simulation of the Breguet 941S. Where possible, airworthiness criteria are proposed for consideration.

  18. Educating with Aircraft Models

    ERIC Educational Resources Information Center

    Steele, Hobie

    1976-01-01

    Described is utilization of aircraft models, model aircraft clubs, and model aircraft magazines to promote student interest in aerospace education. The addresses for clubs and magazines are included. (SL)

  19. 77 FR 59732 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-01

    ... condition during the take off phase. For the above described reasons, this AD requires: --repetitive... and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska; and...-040-AD; Amendment 39-17202; AD 2012-19-07] RIN 2120-AA64 Airworthiness Directives; Airbus...

  20. 78 FR 57784 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-09-20

    ... incorporated by reference at the National Archives and Records Administration (NARA). For information on the... Blagnac Cedex, France; telephone +33 5 61 93 36 96; fax +33 5 61 93 45 80; email airworthiness.A330-A340... apply to the specified products. The NPRM published in the Federal Register on June 21, 2013 (78...

  1. 77 FR 17327 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-26

    ... From the Federal Register Online via the Government Publishing Office DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2011-1087; Directorate Identifier 2011-NM-032-AD; Amendment 39-16967; AD 2012-04-11] RIN 2120-AA64 Airworthiness Directives; Airbus...

  2. 78 FR 40057 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-03

    ... Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska; and 4. Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by reports of certain sliding windows that...

  3. 78 FR 37498 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-21

    ... Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska; and 4. Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... Freighter, and -300 series airplanes. This proposed AD was prompted by a report that a certain wire...

  4. 76 FR 79560 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-12-22

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... airplanes; Model A330-223F and -243F airplanes; and Model A340-200, -300, -500, and -600 series...

  5. 77 FR 60331 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-03

    ...; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes... A321 series airplanes. This proposed AD was prompted by a report of an uncommanded nose landing...

  6. 77 FR 51729 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-27

    ... rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes..., A340-200 and A340-300 series airplanes. This proposed AD was prompted by a report that revealed...

  7. 77 FR 66760 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-07

    ... Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes...-200, A330-300, A340-200, A340- 300, A340-500, and A340-600 series airplanes. This proposed AD...

  8. 77 FR 66764 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-07

    ... the isolation valve 283HN to Frame (FR) 64, between Stringer (STGR) 33 and STGR 34, was too close to... Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska; and 4. Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus...

  9. 77 FR 66762 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-11-07

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Airbus Airplanes..., -304, -322, and -324 airplanes. This proposed AD was prompted by a design review of the fuel...

  10. 75 FR 36579 - Airworthiness Directives; McDonnell Douglas Corporation Model DC-10-30, DC-10-30F, DC-10-30F (KC...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-06-28

    ... Inspection Requirements'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for... Policies and Procedures (44 FR 11034, February 26, 1979), and 3. Will not have a significant economic... inspection for damage to the fuel vapor barrier seal and upper surface of the center upper auxiliary...

  11. 76 FR 36011 - Airworthiness Directives; Fokker Services B.V. Model F.27 Mark 050, 200, 300, 400, 500, 600, and...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-21

    ...'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for transport airplanes and new... rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); and 3. Will.... Model F.27 Mark 050, 200, 300, 400, 500, 600, and 700 Airplanes; and Model F.28 Airplanes...

  12. 76 FR 31 - Airworthiness Directives; The Boeing Company Model 727, 727C, 727-100, 727-100C, 727-200, and 727...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-03

    ... Inspection Requirements'' (66 FR 23086, May 7, 2001). In addition to new airworthiness standards for... Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation in Alaska... by the manufacturer. We are proposing this AD to increase the level of protection from...

  13. 14 CFR 25.819 - Lower deck service compartments (including galleys).

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES Design and Construction Emergency..., mechanical or structural failure, or persons standing on top of or against the escape routes. In the...

  14. 14 CFR 25.337 - Limit maneuvering load factors.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... AIRCRAFT AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES Structure Flight Maneuver and Gust Conditions § 25.337 Limit maneuvering load factors. (a) Except where limited by maximum (static)...

  15. 14 CFR 25.337 - Limit maneuvering load factors.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... AIRCRAFT AIRWORTHINESS STANDARDS: TRANSPORT CATEGORY AIRPLANES Structure Flight Maneuver and Gust Conditions § 25.337 Limit maneuvering load factors. (a) Except where limited by maximum (static)...

  16. Aircraft Speed Instruments

    NASA Technical Reports Server (NTRS)

    Beij, K Hilding

    1933-01-01

    This report presents a concise survey of the measurement of air speed and ground speed on board aircraft. Special attention is paid to the pitot-static air-speed meter which is the standard in the United States for airplanes. Air-speed meters of the rotating vane type are also discussed in considerable detail on account of their value as flight test instruments and as service instruments for airships. Methods of ground-speed measurement are treated briefly, with reference to the more important instruments. A bibliography on air-speed measurement concludes the report.

  17. 75 FR 60667 - Airworthiness Directives; Learjet Inc. Model 45 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-10-01

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Learjet Inc. Model... rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Model 45 airplanes... AD by November 15, 2010. ADDRESSES: You may send comments by any of the following methods: Federal...

  18. 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... 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...

  19. 78 FR 72836 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-04

    ... Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect intrastate aviation... 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...

  20. 78 FR 21576 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-11

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will... 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...

  1. 78 FR 38821 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-06-28

    ... reference at the National Archives and Records Administration (NARA). For information on the availability of...-071-AD; Amendment 39-17482; AD 2013-12-04] RIN 2120-AA64 Airworthiness Directives; Eurocopter France... new airworthiness directive (AD) for Eurocopter France Model EC 155B, EC155B1, SA-366G1, SA-365N,...

  2. 78 FR 76984 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-20

    ... is incorporated by reference at the National Archives and Records Administration (NARA). For...-084-AD; Amendment 39-17696; AD 2013-24-19] RIN 2120-AA64 Airworthiness Directives; Eurocopter France... new airworthiness directive (AD) for Eurocopter France (Eurocopter) Model AS332C, AS332L,...

  3. 78 FR 25367 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-01

    ... information that is incorporated by reference at the National Archives and Records Administration (NARA). For...-021-AD; Amendment 39-17282; AD 2012-25-01] RIN 2120-AA64 Airworthiness Directives; Eurocopter France... new airworthiness directive (AD) for Eurocopter France Model AS350B, AS350BA, AS350B1,...

  4. 78 FR 16200 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-03-14

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eurocopter France...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Eurocopter France...

  5. 78 FR 23686 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-22

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eurocopter France...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Eurocopter France...

  6. 77 FR 36216 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eurocopter France...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for Eurocopter France Model...

  7. 78 FR 63429 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-10-24

    ... Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eurocopter France...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for Eurocopter France Model AS332C,...

  8. 77 FR 58973 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-25

    ... Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eurocopter France...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for the Eurocopter France...

  9. 77 FR 20319 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-04-04

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eurocopter France...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Eurocopter France (EC) Model...

  10. 77 FR 36220 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-06-18

    ... ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eurocopter France...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all Eurocopter France...

  11. 77 FR 65144 - Airworthiness Directives; Embraer S.A. Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-25

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Embraer S.A...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for certain Embraer S.A. Model ERJ 170...

  12. 14 CFR 21.273 - Airworthiness certificates other than experimental.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 1 2010-01-01 2010-01-01 false Airworthiness certificates other than experimental. 21.273 Section 21.273 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF... Procedures § 21.273 Airworthiness certificates other than experimental. (a) The manufacturer may issue...

  13. A framework for the design of a voice-activated, intelligent, and hypermedia-based aircraft maintenance manual

    NASA Astrophysics Data System (ADS)

    Patankar, Manoj Shashikant

    Federal Aviation Regulations require Aviation Maintenance Technicians (AMTs) to refer to approved maintenance manuals when performing maintenance on airworthy aircraft. Because these manuals are paper-based, larger the size of the aircraft, more cumbersome are the manuals. Federal Aviation Administration (FAA) recognized the difficulties associated with the use of large manuals and conducted studies on the use of electronic media as an alternative to the traditional paper format. However, these techniques do not employ any artificial intelligence technologies and the user interface is limited to either a keyboard or a stylus pen. The primary emphasis of this research was to design a generic framework that would allow future development of voice-activated, intelligent, and hypermedia-based aircraft maintenance manuals. A prototype (VIHAMS-Voice-activated, Intelligent, and Hypermedia-based Aircraft Maintenance System) was developed, as a secondary emphasis, using the design and development techniques that evolved from this research. An evolutionary software design approach was used to design the proposed framework and the structured rapid prototyping technique was used to produce the VIHAMS prototype. VoiceAssist by Creative Labs was used to provide the voice interface so that the users (AMTs) could keep their hands free to work on the aircraft while maintaining complete control over the computer through discrete voice commands. KnowledgePro for Windows sp{TM}, an expert system shell, provided "intelligence" to the prototype. As a result of this intelligence, the system provided expert guidance to the user. The core information contained in conventional manuals was available in a hypermedia format. The prototype's operating hardware included a notebook computer with a fully functional audio system. An external microphone and the built-in speaker served as the input and output devices (along with the color monitor), respectively. Federal Aviation Administration

  14. Takeoff certification considerations for large subsonic and supersonic transport airplanes using the Ames flight simulator for advanced aircraft

    NASA Technical Reports Server (NTRS)

    Snyder, C. T.; Drinkwater, F. J., III; Fry, E. B.; Forrest, R. D.

    1973-01-01

    Data for use in development of takeoff airworthiness standards for new aircraft designs such as the supersonic transport (SST) and the large wide-body subsonic jet transport are provided. An advanced motion simulator was used to compare the performance and handling characteristics of three representative large jet transports during specific flight certification tasks. Existing regulatory constraints and methods for determining rotation speed were reviewed, and the effects on takeoff performance of variations in rotation speed, pitch attitude, and pitch attitude rate during the rotation maneuver were analyzed. A limited quantity of refused takeoff information was obtained. The aerodynamics, wing loading, and thrust-to-weight ratio of the subject SST resulted in takeoff speeds limited by climb (rather than lift-off) considerations. Take-off speeds based on U.S. subsonic transport requirements were found unacceptable because of the criticality of rotation-abuse effects on one-engine-inoperative climb performance. Adequate safety margin was provided by takeoff speeds based on proposed Anglo-French supersonic transport (TSS) criteria, with the limiting criterion being that takeoff safety speed be at least 1.15 times the one-engine-inoperative zero-rate-of-climb speed. Various observations related to SST certification are presented.

  15. Aircraft Electric Secondary Power

    NASA Technical Reports Server (NTRS)

    1983-01-01

    Technologies resulted to aircraft power systems and aircraft in which all secondary power is supplied electrically are discussed. A high-voltage dc power generating system for fighter aircraft, permanent magnet motors and generators for aircraft, lightweight transformers, and the installation of electric generators on turbine engines are among the topics discussed.

  16. World commercial aircraft accidents

    SciTech Connect

    Kimura, C.Y.

    1993-01-01

    This report is a compilation of all accidents world-wide involving aircraft in commercial service which resulted in the loss of the airframe or one or more fatality, or both. This information has been gathered in order to present a complete inventory of commercial aircraft accidents. Events involving military action, sabotage, terrorist bombings, hijackings, suicides, and industrial ground accidents are included within this list. Included are: accidents involving world commercial jet aircraft, world commercial turboprop aircraft, world commercial pistonprop aircraft with four or more engines and world commercial pistonprop aircraft with two or three engines from 1946 to 1992. Each accident is presented with information in the following categories: date of the accident, airline and its flight numbers, type of flight, type of aircraft, aircraft registration number, construction number/manufacturers serial number, aircraft damage, accident flight phase, accident location, number of fatalities, number of occupants, cause, remarks, or description (brief) of the accident, and finally references used. The sixth chapter presents a summary of the world commercial aircraft accidents by major aircraft class (e.g. jet, turboprop, and pistonprop) and by flight phase. The seventh chapter presents several special studies including a list of world commercial aircraft accidents for all aircraft types with 100 or more fatalities in order of decreasing number of fatalities, a list of collision accidents involving commercial aircrafts, and a list of world commercial aircraft accidents for all aircraft types involving military action, sabotage, terrorist bombings, and hijackings.

  17. Experimental flight test vibration measurements and nondestructive inspection on a USCG HC-130H aircraft

    SciTech Connect

    Moore, D.G.; Jones, C.R.; Mihelic, J.E.; Barnes, J.D.

    1998-08-01

    This paper presents results of experimental flight test vibration measurements and structural inspections performed by the Federal Aviation Administration`s Airworthiness Assurance NDI Validation Center (AANC) at Sandia National Laboratories and the US Coast Guard Aircraft Repair and Supply Center (ARSC). Structural and aerodynamic changes induced by mounting a Forward Looking Infrared (FLIR) system on a USCG HC-130H aircraft are described. The FLIR adversely affected the air flow characteristics and structural vibration on the external skin of the aircraft`s right main wheel well fairing. Upon initial discovery of skin cracking and visual observation of skin vibration in flight by the FLIR, a baseline flight without the FLIR was conducted and compared to other measurements with the FLIR installed. Nondestructive inspection procedures were developed to detect cracks in the skin and supporting structural elements and document the initial structural condition of the aircraft. Inspection results and flight test vibration data revealed that the FLIR created higher than expected flight loading and was the possible source of the skin cracking. The Coast Guard performed significant structural repair and enhancement on this aircraft, and additional in-flight vibration measurements were collected on the strengthened area both with and without the FLIR installed. After three months of further operational FLIR usage, the new aircraft skin with the enhanced structural modification was reinspected and found to be free of flaws. Additional US Coast Guard HC-130H aircraft are now being similarly modified to accommodate this FLIR system. Measurements of in-flight vibration levels with and without the FLIR installed, and both before and after the structural enhancement and repair were conducted on the skin and supporting structure in the aircraft`s right main wheel fairing. Inspection results and techniques developed to verify the aircraft`s structural integrity are discussed.

  18. The Second Joint NASA/FAA/DOD Conference on Aging Aircraft. Pt. 1

    NASA Technical Reports Server (NTRS)

    Harris, Charles E. (Editor)

    1999-01-01

    The purpose of the Conference was to bring together world leaders in aviation safety research, aircraft design and manufacturing, fleet operation and aviation maintenance to disseminate information on current practices and advanced technologies that will assure the continued airworthiness of the aging aircraft in the military and commercial fleets. The Conference included reviews of current industry practices, assessments of future technology requirements, and status of aviation safety research. The Conference provided an opportunity for interactions among the key personnel in the research and technology development community, the original equipment manufacturers, commercial airline operators, military fleet operators, aviation maintenance, and aircraft certification and regulatory authorities. Conference participation was unrestricted and open to the international aviation community.

  19. The Second Joint NASA/FAA/DoD Conference on Aging Aircraft. Part 2

    NASA Technical Reports Server (NTRS)

    Harris, Charles E. (Editor)

    1999-01-01

    The purpose of the Conference was to bring together world leaders in aviation safety research, aircraft design and manufacturing, fleet operation and aviation maintenance to disseminate information on current practices and advanced technologies that will assure the continued airworthiness of the aging aircraft in the military and commercial fleets. The Conference included reviews of current industry practices, assessments of future technology requirements, and status of aviation safety research. The Conference provided an opportunity for interactions among the key personnel in the research and technology development community, the original equipment manufacturers, commercial airline operators, military fleet operators, aviation maintenance, and aircraft certification and regulatory authorities. Conference participation was unrestricted and open to the international aviation community. Appendix B contains the name and addresses of the 623 participants in the Conference.

  20. 78 FR 78705 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-27

    ...We are superseding Airworthiness Directive (AD) 2010-24-07 for all Airbus Model A318 series airplanes, Model A319 series airplanes, Model A320 series airplanes, and Model A321 series airplanes. AD 2010- 24-07 required repetitive inspections of the 80VU rack lower lateral fittings for damage, repetitive inspections of the 80VU rack lower central support for cracking, and corrective action if......

  1. 77 FR 12989 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-05

    ...We are adopting a new airworthiness directive (AD) for certain Airbus Model A330-200 series airplanes; Model A330-300 series airplanes; Model A340-200 series airplanes; and Model A340-300 series airplanes. This AD was prompted by a report that three failures of the retraction bracket occurred during fatigue testing before the calculated life limit of the main landing gear (MLG). This AD......

  2. 78 FR 29666 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-05-21

    ...We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200 and -300 series airplanes; Model A340-200 and -300 series airplanes; and Model A340-541 and -642 airplanes. This proposed AD was prompted by reports of wing tip brakes (WTBs) losing their braking function in service due to heavy wear on the brake discs. WTBs are designed to stop and hold the mechanical......

  3. 77 FR 26996 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-05-08

    ...We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A320-214 and-232 airplanes. This proposed AD was prompted by reports that medium-head fasteners were installed in lieu of shear-head fasteners on a certain upper panel which manufacturer fatigue and damage tolerance analyses demonstrated could have an affect on panel fatigue life. This proposed AD would require......

  4. 78 FR 78294 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-26

    ...We propose to adopt a new airworthiness directive (AD) for certain Airbus Model A330-200, A330-200 Freighter, and A330-300 series airplanes; and Model A340-200, A340-300, A340-500, and A340-600 series airplanes. This proposed AD was prompted by the failure of the generator control unit-constant speed motor/generator (GCU-CSM/G) during a final assembly operational test. This proposed AD would......

  5. 77 FR 65812 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-31

    ...We are adopting a new airworthiness directive (AD) for all Airbus Model A330-200 freighter series airplanes; Model A330-200 and - 300 series airplanes; and Model A340-200 and -300 series airplanes. This AD was prompted by reports of ram air turbine (RAT) pump failure. This AD requires inspecting the RAT pump anti-stall valve for correct setting, re-identifying the RAT pump, performing a......

  6. 77 FR 40830 - Airworthiness Directives; Airbus Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-11

    ...We propose to adopt a new airworthiness directive (AD) for all Airbus Model A330-200 freighter series airplanes; Model A330-200 and - 300 series airplanes; and Model A340-200 and -300 series airplanes. This proposed AD was prompted by reports of ram air turbine (RAT) pump failure. This proposed AD would require inspecting the RAT pump anti- stall valve for correct setting, re-identifying the......

  7. Registration and Marking Requirements for UAS. Unmanned Aircraft System (UAS) Registration

    NASA Technical Reports Server (NTRS)

    2005-01-01

    The registration of an aircraft is a prerequisite for issuance of a U.S. certificate of airworthiness by the FAA. The procedures and requirements for aircraft registration, and the subsequent issuance of registration numbers, are contained in FAR Part 47. However, the process/method(s) for applying the requirements of Parts 45 & 47 to Unmanned Aircraft Systems (UAS) has not been defined. This task resolved the application of 14 CFR Parts 45 and 47 to UAS. Key Findings: UAS are aircraft systems and as such the recommended approach to registration is to follow the same process for registration as manned aircraft. This will require manufacturers to comply with the requirements for 14 CFR 47, Aircraft Registration and 14 CFR 45, Identification and Registration Marking. In addition, only the UA should be identified with the N number registration markings. There should also be a documentation link showing the applicability of the control station and communication link to the UA. The documentation link can be in the form of a Type Certificate Data Sheet (TCDS) entry or a UAS logbook entry. The recommended process for the registration of UAS is similar to the manned aircraft process and is outlined in a 6-step process in the paper.

  8. Working Charts for the Selection of Aluminum Alloy Propellers of a Standard Form to Operate with Various Aircraft Engines and Bodies

    NASA Technical Reports Server (NTRS)

    Weick, Fred E

    1931-01-01

    Working charts are given for the convenient selection of aluminum alloy propellers of a standard form, to operate in connection with six different engine-fuselage combinations. The charts have been prepared from full-scale test data obtained in the 20-foot propeller research tunnel of the National Advisory Committee for Aeronautics. An example is also given showing the use of the charts.

  9. Propulsion controlled aircraft computer

    NASA Technical Reports Server (NTRS)

    Cogan, Bruce R. (Inventor)

    2010-01-01

    A low-cost, easily retrofit Propulsion Controlled Aircraft (PCA) system for use on a wide range of commercial and military aircraft consists of an propulsion controlled aircraft computer that reads in aircraft data including aircraft state, pilot commands and other related data, calculates aircraft throttle position for a given maneuver commanded by the pilot, and then displays both current and calculated throttle position on a cockpit display to show the pilot where to move throttles to achieve the commanded maneuver, or is automatically sent digitally to command the engines directly.

  10. A review of advanced turboprop transport aircraft

    NASA Astrophysics Data System (ADS)

    Lange, Roy H.

    The application of advanced technologies shows the potential for significant improvement in the fuel efficiency and operating costs of future transport aircraft envisioned for operation in the 1990s time period. One of the more promising advanced technologies is embodied in an advanced turboprop concept originated by Hamilton Standard and NASA and known as the propfan. The propfan concept features a highly loaded multibladed, variable pitch propeller geared to a high pressure ratio gas turbine engine. The blades have high sweepback and advanced airfoil sections to achieve 80 percent propulsive efficiency at M=0.80 cruise speed. Aircraft system studies have shown improvements in fuel efficiency of 15-20 percent for propfan advanced transport aircraft as compared to equivalent turbofan transports. Beginning with the Lockheed C-130 and Electra turboprop aircraft, this paper presents an overview of the evolution of propfan aircraft design concepts and system studies. These system studies include possible civil and military transport applications and data on the performance, community and far-field noise characteristics and operating costs of propfan aircraft design concepts. NASA Aircraft Energy Efficiency (ACEE) program propfan projects with industry are reviewed with respect to system studies of propfan aircraft and recommended flight development programs.

  11. Combining performance and outcome indicators can be used in a standardized way: a pilot study of two multidisciplinary, full-scale major aircraft exercises

    PubMed Central

    2012-01-01

    Background Disaster medicine is a fairly young scientific discipline and there is a need for the development of new methods for evaluation and research. This includes full-scale disaster exercisers. A standardized concept on how to evaluate these exercises, could lead to easier identification of pitfalls caused by system-errors in the organization. The aim of this study was to demonstrate the feasibility of using a combination of performance and outcome indicators so that results can be compared in standardized full-scale exercises. Methods Two multidisciplinary, full-scale exercises were studied in 2008 and 2010. The panorama had the same setup. Sets of performance indicators combined with indicators for unfavorable patient outcome were recorded in predesigned templates. Evaluators, all trained in a standardized way at a national disaster medicine centre, scored the results on predetermined locations; at the scene, at hospital and at the regional command and control. Results All data regarding the performance indicators of the participants during the exercises were obtained as well as all data regarding indicators for patient outcome. Both exercises could therefore be compared regarding performance (processes) as well as outcome indicators. The data from the performance indicators during the exercises showed higher scores for the prehospital command in the second exercise 15 points and 3 points respectively. Results from the outcome indicators, patient survival and patient complications, demonstrated a higher number of preventable deaths and a lower number of preventable complications in the exercise 2010. In the exercise 2008 the number of preventable deaths was lower and the number of preventable complications was higher. Conclusions Standardized multidisciplinary, full-scale exercises in different settings can be conducted and evaluated with performance indicators combined with outcome indicators enabling results from exercises to be compared. If exercises are

  12. Fire resistivity and toxicity studies of candidate aircraft passenger seat materials

    NASA Technical Reports Server (NTRS)

    Fewell, L. L.; Trabold, E. L.; Spieth, H.

    1978-01-01

    Fire resistivity studies were conducted on a wide range of candidate nonmetallic materials being considered for the construction of improved fire resistant aircraft passenger seats. These materials were evaluated on the basis of FAA airworthiness burn and smoke generation tests, colorfastness, limiting oxygen index, and animal toxicity tests. Physical, mechanical, and aesthetic properties were also assessed. Candidate seat materials that have significantly improved thermal response to various thermal loads corresponding to reasonable fire threats as they relate to in-flight fire situations, are identified.

  13. AIRCRAFT DEPAINTING TECHNOLOGY

    EPA Science Inventory

    Chemical paint strippers historically used for aircraft contained toxic and hazardous components; aircraft depainting operations are a major source of hazardous waste generation in DOD. Federal and state agencies have begun to restrict using these hazardous materials and Governme...

  14. 78 FR 70198 - Airworthiness Directives; Rolls-Royce Deutschland Ltd & Co KG Turbofan Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-25

    ...-15-AD; Amendment 39-17656; AD 2013-23-01] RIN 2120-AA64 Airworthiness Directives; Rolls-Royce... rule. SUMMARY: We are adopting a new airworthiness directive (AD) for all Rolls-Royce Deutschland Ltd... airworthiness directive (AD): 2013-23-01 Rolls-Royce Deutschland Ltd & Co KG: Amendment 39-17656; Docket No....

  15. Computing Linear Mathematical Models Of Aircraft

    NASA Technical Reports Server (NTRS)

    Duke, Eugene L.; Antoniewicz, Robert F.; Krambeer, Keith D.

    1991-01-01

    Derivation and Definition of Linear Aircraft Model (LINEAR) computer program provides user with powerful, and flexible, standard, documented, and verified software tool for linearization of mathematical models of aerodynamics of aircraft. Intended for use in software tool to drive linear analysis of stability and design of control laws for aircraft. Capable of both extracting such linearized engine effects as net thrust, torque, and gyroscopic effects, and including these effects in linear model of system. Designed to provide easy selection of state, control, and observation variables used in particular model. Also provides flexibility of allowing alternate formulations of both state and observation equations. Written in FORTRAN.

  16. Aircraft noise problems

    NASA Astrophysics Data System (ADS)

    1981-01-01

    The problems related to aircraft noise were studied. Physical origin (sound), human reaction (noise), quantization of noise and sound sources of aircraft noise are discussed. Noise abatement at the source, technical, fleet-political and air traffic measures are explained. The measurements and future developments are also discussed. The position of Lufthansa as regards aircraft noise problems is depicted.

  17. Unmanned aircraft systems

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Unmanned platforms have become increasingly more common in recent years for acquiring remotely sensed data. These aircraft are referred to as Unmanned Airborne Vehicles (UAV), Remotely Piloted Aircraft (RPA), Remotely Piloted Vehicles (RPV), or Unmanned Aircraft Systems (UAS), the official term used...

  18. Tilt Rotor Aircraft Aeroacoustics

    NASA Technical Reports Server (NTRS)

    George, Albert R.

    1996-01-01

    A fleet of civil tilt rotor transports offers a means of reducing airport congestion and point-to-point travel time. The speed, range, and fuel economy of these aircraft, along with their efficient use of vertiport area, make them good candidates for short-to-medium range civil transport. However, to be successfully integrated into the civilian community, the tilt rotor must be perceived as a quiet, safe, and economical mode of transportation that does not harm the environment. In particular, noise impact has been identified as a possible barrier to the civil tilt rotor. Along with rotor conversion-mode flight, and blade-vortex interaction noise during descent, hover mode is a noise problem for tilt rotor operations. In the present research, tilt rotor hover aeroacoustics have been studied analytically, experimentally, and computationally. Various papers on the subject were published as noted in the list of publications. More recently, experimental measurements were made on a 1/12.5 scale model of the XV-15 in hover and analyses of this data and extrapolations to full scale were also carried out. A dimensional analysis showed that the model was a good aeroacoustic approximation to the full-scale aircraft, and scale factors were derived to extrapolate the model measurements to the full-scale XV-15. The experimental measurements included helium bubble flow visualization, silk tuft flow visualization, 2-component hot wire anemometry, 7-hole pressure probe measurements, vorticity measurements, and outdoor far field acoustic measurements. The hot wire measurements were used to estimate the turbulence statistics of the flow field into the rotors, such as length scales, velocity scales, dissipation, and turbulence intermittency. Several different configurations of the model were tested: (1) standard configurations (single isolated rotor, two rotors without the aircraft, standard tilt rotor configuration); (2) flow control devices (the 'plate', the 'diagonal fences'); (3

  19. 77 FR 12991 - Airworthiness Directives; Robinson Helicopter Company Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-05

    ...). SUPPLEMENTARY INFORMATION: Airworthiness Directive 2011-12-10, Amendment 39-16717 (76 FR 35330, June 17, 2011.... That AD applies to Robinson Helicopter Company (Robinson) Model R22, R22 Alpha, R22 Beta, R22...

  20. Impact Response Study on Covering Cap of Aircraft Big-Size Integral Fuel Tank

    NASA Astrophysics Data System (ADS)

    Wang, Fusheng; Jia, Senqing; Wang, Yi; Yue, Zhufeng

    2016-05-01

    In order to assess various design concepts and choose a kind of covering cap design scheme which can meet the requirements of airworthiness standard and ensure the safety of fuel tank. Using finite element software ANSYS/LS- DYNA, the impact process of covering cap of aircraft fuel tank by projectile were simulated, in which dynamical characteristics of simple single covering cap and gland double-layer covering cap impacted by titanium alloy projectile and rubber projectile were studied, as well as factor effects on simple single covering cap and gland double-layer covering cap under impact region, impact angle and impact energy were also studied. Though the comparison of critical damage velocity and element deleted number of the covering caps, it shows that the external covering cap has a good protection effect on internal covering cap. The regions close to boundary are vulnerable to appear impact damage with titanium alloy projectile while the regions close to center is vulnerable to occur damage with rubber projectile. Equivalent strain in covering cap is very little when impact angle is less than 15°. Element deleted number in covering cap reaches the maximum when impact angle is between 60°and 65°by titanium alloy projectile. While the bigger the impact angle and the more serious damage of the covering cap will be when rubber projectile impact composite covering cap. The energy needed for occurring damage on external covering cap and internal covering cap is less than and higher than that when single covering cap occur damage, respectively. The energy needed for complete breakdown of double-layer covering cap is much higher than that of single covering cap.

  1. 40 CFR 85.1715 - Aircraft meeting the definition of motor vehicle.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    .... (b) The standards, requirements, and prohibitions of 40 CFR part 86 do not apply for aircraft or aircraft engines. Standards apply separately to certain aircraft engines, as described in 40 CFR part 87. ... motor vehicle. 85.1715 Section 85.1715 Protection of Environment ENVIRONMENTAL PROTECTION...

  2. 40 CFR 85.1715 - Aircraft meeting the definition of motor vehicle.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    .... (b) The standards, requirements, and prohibitions of 40 CFR part 86 do not apply for aircraft or aircraft engines. Standards apply separately to certain aircraft engines, as described in 40 CFR part 87. ... motor vehicle. 85.1715 Section 85.1715 Protection of Environment ENVIRONMENTAL PROTECTION...

  3. 40 CFR 85.1715 - Aircraft meeting the definition of motor vehicle.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    .... (b) The standards, requirements, and prohibitions of 40 CFR part 86 do not apply for aircraft or aircraft engines. Standards apply separately to certain aircraft engines, as described in 40 CFR part 87. ... motor vehicle. 85.1715 Section 85.1715 Protection of Environment ENVIRONMENTAL PROTECTION...

  4. 40 CFR 85.1715 - Aircraft meeting the definition of motor vehicle.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    .... (b) The standards, requirements, and prohibitions of 40 CFR part 86 do not apply for aircraft or aircraft engines. Standards apply separately to certain aircraft engines, as described in 40 CFR part 87. ... motor vehicle. 85.1715 Section 85.1715 Protection of Environment ENVIRONMENTAL PROTECTION...

  5. Aircraft landing gear systems

    NASA Technical Reports Server (NTRS)

    Tanner, John A. (Editor)

    1990-01-01

    Topics presented include the laboratory simulation of landing gear pitch-plane dynamics, a summary of recent aircraft/ground vehicle friction measurement tests, some recent aircraft tire thermal studies, and an evaluation of critical speeds in high-speed aircraft. Also presented are a review of NASA antiskid braking research, titanium matrix composite landing gear development, the current methods and perspective of aircraft flotation analysis, the flow rate and trajectory of water spray produced by an aircraft tire, and spin-up studies of the Space Shuttle Orbiter main gear tire.

  6. Small transport aircraft technology

    NASA Technical Reports Server (NTRS)

    Williams, L. J.

    1983-01-01

    Information on commuter airline trends and aircraft developments is provided to upgrade the preliminary findings of a NASA-formed small transport aircraft technology (STAT) team, established to determine whether the agency's research and development programs could help commuter aircraft manufacturers solve technical problems related to passenger acceptance and use of 19- to 50-passenger aircraft. The results and conclusions of the full set of completed STAT studies are presented. These studies were performed by five airplane manufacturers, five engine manufacturers, and two propeller manufacturers. Those portions of NASA's overall aeronautics research and development programs which are applicable to commuter aircraft design are summarized. Areas of technology that might beneficially be expanded or initiated to aid the US commuter aircraft manufacturers in the evolution of improved aircraft for the market are suggested.

  7. Performance Evaluation Method for Dissimilar Aircraft Designs

    NASA Technical Reports Server (NTRS)

    Walker, H. J.

    1979-01-01

    A rationale is presented for using the square of the wingspan rather than the wing reference area as a basis for nondimensional comparisons of the aerodynamic and performance characteristics of aircraft that differ substantially in planform and loading. Working relationships are developed and illustrated through application to several categories of aircraft covering a range of Mach numbers from 0.60 to 2.00. For each application, direct comparisons of drag polars, lift-to-drag ratios, and maneuverability are shown for both nondimensional systems. The inaccuracies that may arise in the determination of aerodynamic efficiency based on reference area are noted. Span loading is introduced independently in comparing the combined effects of loading and aerodynamic efficiency on overall performance. Performance comparisons are made for the NACA research aircraft, lifting bodies, century-series fighter aircraft, F-111A aircraft with conventional and supercritical wings, and a group of supersonic aircraft including the B-58 and XB-70 bomber aircraft. An idealized configuration is included in each category to serve as a standard for comparing overall efficiency.

  8. Assessment of NDE needs for aging corporate and private aircraft

    NASA Astrophysics Data System (ADS)

    Reinhart, Eugene R.

    1998-03-01

    Considerable attention has been focused on the life extension of ageing military and commercial aircraft by the government and major aircraft fabricators. A vital, but often neglected segment of the aircraft industry is the are of inspecting ageing fleets of corporate and privately-owned aircraft. Many of these aircraft are inspected and maintained by the various FAA-approved repair stations located around the country. Nondestructive inspection (NDI) methods, equipment, and trained inspectors are a key aspect of maintaining these aircraft; however, there are currently several issues that need to be addressed by the private sector NDI community. Personnel training and certification to an accepted standard is critically needed in this industry since experience and capability in NDI can vary considerably between FAA stations and inspectors. Also, the updating of NDI methods are standards is needed. A review of these issues and suggestions for improvement are presented.

  9. Experimental flight test vibration measurements and nondestructive inspection on a USCG HC-130H aircraft

    NASA Technical Reports Server (NTRS)

    Moore, D. G.; Jones, C. R.; Mihelic, J. E.; Barnes, J. D.

    1998-01-01

    This paper presents results of experimental flight test vibration measurements and structural inspections performed by the Federal Aviation Administration's Airworthiness Assurance NDI Validation Center (AANC) at Sandia National Laboratories and the US Coast Guard Aircraft Repair and Supply Center (ARSC). Structural and aerodynamic changes induced by mounting a Forward Looking Infrared (FLIR) system on a USCG HC-130H aircraft are described. The FLIR adversely affected the air flow characteristics and structural vibration on the external skin of the aircraft's right main wheel well fairing. Upon initial discovery of skin cracking and visual observation of skin vibration in flight by the FLIR, a baseline flight without the FLIR was conducted and compared to other measurements with the FLIR installed. Nondestructive inspection procedures were developed to detect cracks in the skin and supporting structural elements and document the initial structural condition of the aircraft. Inspection results and flight test vibration data revealed that the FLIR created higher than expected flight loading and was the possible source of the skin cracking. The Coast Guard performed significant structural repair and enhancement on this aircraft, and additional in-flight vibration measurements were collected on the strengthened area both with and without the FLIR installed. After three months of further operational FLIR usage, the new aircraft skin with the enhanced structural modification was reinspected and found to be free of flaws. Additional US Coast Guard HC-130H aircraft are now being similarly modified to accommodate this FLIR system. Measurements of in- flight vibration levels with and without the FLIR installed, and both before and after the structural enhancement and repair were conducted on the skin and supporting structure in the aircraft's right main wheel fairing. Inspection results and techniques developed to verify the aircraft's structural integrity are discussed.

  10. Recent developments in analysis of crack propagation and fracture of practical materials. [stress analysis in aircraft structures

    NASA Technical Reports Server (NTRS)

    Hardrath, H. F.; Newman, J. C., Jr.; Elber, W.; Poe, C. C., Jr.

    1978-01-01

    The limitations of linear elastic fracture mechanics in aircraft design and in the study of fatigue crack propagation in aircraft structures are discussed. NASA-Langley research to extend the capabilities of fracture mechanics to predict the maximum load that can be carried by a cracked part and to deal with aircraft design problems are reported. Achievements include: (1) improved stress intensity solutions for laboratory specimens; (2) fracture criterion for practical materials; (3) crack propagation predictions that account for mean stress and high maximum stress effects; (4) crack propagation predictions for variable amplitude loading; and (5) the prediction of crack growth and residual stress in built-up structural assemblies. These capabilities are incorporated into a first generation computerized analysis that allows for damage tolerance and tradeoffs with other disciplines to produce efficient designs that meet current airworthiness requirements.

  11. Maneuver Classification for Aircraft Fault Detection

    NASA Technical Reports Server (NTRS)

    Oza, Nikunj C.; Tumer, Irem Y.; Tumer, Kagan; Huff, Edward M.

    2003-01-01

    Automated fault detection is an increasingly important problem in aircraft maintenance and operation. Standard methods of fault detection assume the availability of either data produced during all possible faulty operation modes or a clearly-defined means to determine whether the data provide a reasonable match to known examples of proper operation. In the domain of fault detection in aircraft, identifying all possible faulty and proper operating modes is clearly impossible. We envision a system for online fault detection in aircraft, one part of which is a classifier that predicts the maneuver being performed by the aircraft as a function of vibration data and other available data. To develop such a system, we use flight data collected under a controlled test environment, subject to many sources of variability. We explain where our classifier fits into the envisioned fault detection system as well as experiments showing the promise of this classification subsystem.

  12. Classification of Aircraft Maneuvers for Fault Detection

    NASA Technical Reports Server (NTRS)

    Oza, Nikunj C.; Tumer, Irem Y.; Tumer, Kagan; Huff, Edward M.; Clancy, Daniel (Technical Monitor)

    2002-01-01

    Automated fault detection is an increasingly important problem in aircraft maintenance and operation. Standard methods of fault detection assume the availability of either data produced during all possible faulty operation modes or a clearly-defined means to determine whether the data is a reasonable match to known examples of proper operation. In our domain of fault detection in aircraft, the first assumption is unreasonable and the second is difficult to determine. We envision a system for online fault detection in aircraft, one part of which is a classifier that predicts the maneuver being performed by the aircraft as a function of vibration data and other available data. We explain where this subsystem fits into our envisioned fault detection system as well its experiments showing the promise of this classification subsystem.

  13. Classification of Aircraft Maneuvers for Fault Detection

    NASA Technical Reports Server (NTRS)

    Oza, Nikunj; Tumer, Irem Y.; Tumer, Kagan; Huff, Edward M.; Koga, Dennis (Technical Monitor)

    2002-01-01

    Automated fault detection is an increasingly important problem in aircraft maintenance and operation. Standard methods of fault detection assume the availability of either data produced during all possible faulty operation modes or a clearly-defined means to determine whether the data provide a reasonable match to known examples of proper operation. In the domain of fault detection in aircraft, the first assumption is unreasonable and the second is difficult to determine. We envision a system for online fault detection in aircraft, one part of which is a classifier that predicts the maneuver being performed by the aircraft as a function of vibration data and other available data. To develop such a system, we use flight data collected under a controlled test environment, subject to many sources of variability. We explain where our classifier fits into the envisioned fault detection system as well as experiments showing the promise of this classification subsystem.

  14. Technology for reducing aircraft engine pollution

    NASA Technical Reports Server (NTRS)

    Rudey, R. A.; Kempke, E. E., Jr.

    1975-01-01

    Programs have been initiated by NASA to develop and demonstrate advanced technology for reducing aircraft gas turbine and piston engine pollutant emissions. These programs encompass engines currently in use for a wide variety of aircraft from widebody-jets to general aviation. Emission goals for these programs are consistent with the established EPA standards. Full-scale engine demonstrations of the most promising pollutant reduction techniques are planned within the next three years. Preliminary tests of advanced technology gas turbine engine combustors indicate that significant reductions in all major pollutant emissions should be attainable in present generation aircraft engines without adverse effects on fuel consumption. Fundamental-type programs are yielding results which indicate that future generation gas turbine aircraft engines may be able to utilize extremely low pollutant emission combustion systems.

  15. Handbook of aircraft noise metrics

    NASA Astrophysics Data System (ADS)

    Bennett, R. L.; Pearsons, K. S.

    1981-03-01

    Information is presented on 22 noise metrics that are associated with the measurement and prediction of the effects of aircraft noise. Some of the instantaneous frequency weighted sound level measures, such as A-weighted sound level, are used to provide multiple assessment of the aircraft noise level. Other multiple event metrics, such as day-night average sound level, were designed to relate sound levels measured over a period of time to subjective responses in an effort to determine compatible land uses and aid in community planning. The various measures are divided into: (1) instantaneous sound level metrics; (2) duration corrected single event metrics; (3) multiple event metrics; and (4) speech communication metrics. The scope of each measure is examined in terms of its: definition, purpose, background, relationship to other measures, calculation method, example, equipment, references, and standards.

  16. Handbook of aircraft noise metrics

    NASA Technical Reports Server (NTRS)

    Bennett, R. L.; Pearsons, K. S.

    1981-01-01

    Information is presented on 22 noise metrics that are associated with the measurement and prediction of the effects of aircraft noise. Some of the instantaneous frequency weighted sound level measures, such as A-weighted sound level, are used to provide multiple assessment of the aircraft noise level. Other multiple event metrics, such as day-night average sound level, were designed to relate sound levels measured over a period of time to subjective responses in an effort to determine compatible land uses and aid in community planning. The various measures are divided into: (1) instantaneous sound level metrics; (2) duration corrected single event metrics; (3) multiple event metrics; and (4) speech communication metrics. The scope of each measure is examined in terms of its: definition, purpose, background, relationship to other measures, calculation method, example, equipment, references, and standards.

  17. Raptors and aircraft

    USGS Publications Warehouse

    Smith, D.G.; Ellis, D.H.; Johnson, T.H.

    1988-01-01

    Less than 5% of all bird strikes of aircraft are by raptor species, but damage to airframe structure or jet engine dysfunction are likely consequences. Beneficial aircraft-raptor interactions include the use of raptor species to frighten unwanted birds from airport areas and the use of aircraft to census raptor species. Many interactions, however, modify the raptor?s immediate behavior and some may decrease reproduction of sensitive species. Raptors may respond to aircraft stimuli by exhibiting alarm, increased heart rate, flushing or fleeing and occasionally by directly attacking intruding aircraft. To date, most studies reveal that raptor responses to aircraft are brief and do not limit reproduction; however, additional study is needed.

  18. Lightning effects on aircraft

    NASA Technical Reports Server (NTRS)

    1977-01-01

    Direct and indirect effects of lightning on aircraft were examined in relation to aircraft design. Specific trends in design leading to more frequent lightning strikes were individually investigated. These trends included the increasing use of miniaturized, solid state components in aircraft electronics and electric power systems. A second trend studied was the increasing use of reinforced plastics and other nonconducting materials in place of aluminum skins, a practice that reduces the electromagnetic shielding furnished by a conductive skin.

  19. Optimization of the terrain following radar flight cues in special operations aircraft

    NASA Astrophysics Data System (ADS)

    Garman, Patrick J.; Trang, Jeff A.

    1995-05-01

    Over the past 18 months the Army has been developing a terrain following capability in it's next generation special operations aircraft (SOA), the MH-60K and the MH-47E. As two experimental test pilots assigned to the Army's Airworthiness Qualification Test Directorate of the US Army Aviation Technical Test Center, we would like to convey the role that human factors has played in the development of the MMR for terrain following operations in the SOA. In the MH-60K, the pilot remains the interface between the aircraft, via the flight controls and the processed radar data, and the flight director cues. The presentation of the processed radar data to the pilot significantly affects the overall system performance, and is directly driven by the way humans see, process, and react to stimuli. Our development has been centered around the optimization of this man-machine interface.

  20. Aircraft fire safety research

    NASA Technical Reports Server (NTRS)

    Botteri, Benito P.

    1987-01-01

    During the past 15 years, very significant progress has been made toward enhancing aircraft fire safety in both normal and hostile (combat) operational environments. Most of the major aspects of the aircraft fire safety problem are touched upon here. The technology of aircraft fire protection, although not directly applicable in all cases to spacecraft fire scenarios, nevertheless does provide a solid foundation to build upon. This is particularly true of the extensive research and testing pertaining to aircraft interior fire safety and to onboard inert gas generation systems, both of which are still active areas of investigation.

  1. Hypersonic aircraft design

    NASA Technical Reports Server (NTRS)

    Alkamhawi, Hani; Greiner, Tom; Fuerst, Gerry; Luich, Shawn; Stonebraker, Bob; Wray, Todd

    1990-01-01

    A hypersonic aircraft is designed which uses scramjets to accelerate from Mach 6 to Mach 10 and sustain that speed for two minutes. Different propulsion systems were considered and it was decided that the aircraft would use one full scale turbofan-ramjet. Two solid rocket boosters were added to save fuel and help the aircraft pass through the transonic region. After considering aerodynamics, aircraft design, stability and control, cooling systems, mission profile, and landing systems, a conventional aircraft configuration was chosen over that of a waverider. The conventional design was chosen due to its landing characteristics and the relative expense compared to the waverider. Fuel requirements and the integration of the engine systems and their inlets are also taken into consideration in the final design. A hypersonic aircraft was designed which uses scramjets to accelerate from Mach 6 to Mach 10 and sustain that speed for two minutes. Different propulsion systems were considered and a full scale turbofan-ramjet was chosen. Two solid rocket boosters were added to save fuel and help the aircraft pass through the transonic reqion. After the aerodynamics, aircraft design, stability and control, cooling systems, mission profile, landing systems, and their physical interactions were considered, a conventional aircraft configuration was chosen over that of a waverider. The conventional design was chosen due to its landing characteristics and the relative expense compared to the waverider. Fuel requirements and the integration of the engine systems and their inlets were also considered in the designing process.

  2. 76 FR 42020 - Airworthiness Standards; Rotor Overspeed Requirements

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-07-18

    ... published a notice of proposed rulemaking (NPRM) on April 26, 2010 (75 FR 21523). The proposed changes... regulatory changes on small entities. Third, the Trade Agreements Act (Pub. L. 96-39) prohibits agencies from... substantial number of small entities; (5) will not create unnecessary obstacles to the foreign commerce of...

  3. Aircraft noise prediction program theoretical manual, part 2

    NASA Technical Reports Server (NTRS)

    Zorumski, W. E.

    1982-01-01

    Detailed prediction methods for specific aircraft noise sources are given. These sources are airframe noise, combustion noise, fan noise, single and dual stream jet noise, and turbine noise. Modifications to the NASA methods which comply with the International Civil Aviation Organization standard method for aircraft noise prediction are given.

  4. Procedure for calculating general aircraft noise based on ISO 3891

    SciTech Connect

    Hediger, J.R.

    1982-01-01

    The standard ISO-3891 specifies the presentation of aircraft noise heard on the ground or of noise exposure by succession of aircraft, without giving any details on different parameters required to their calculation. The following study provides some of these parameters considering acoustic measurements as well as laboratory analysis realized in co-operation with the Swiss Federal Office for Civil Aviation.

  5. Aircraft noise prediction program theoretical manual, part 2

    NASA Astrophysics Data System (ADS)

    Zorumski, W. E.

    1982-02-01

    Detailed prediction methods for specific aircraft noise sources are given. These sources are airframe noise, combustion noise, fan noise, single and dual stream jet noise, and turbine noise. Modifications to the NASA methods which comply with the International Civil Aviation Organization standard method for aircraft noise prediction are given.

  6. Human Factors In Aircraft Automation

    NASA Technical Reports Server (NTRS)

    Billings, Charles

    1995-01-01

    Report presents survey of state of art in human factors in automation of aircraft operation. Presents examination of aircraft automation and effects on flight crews in relation to human error and aircraft accidents.

  7. General Aviation Aircraft Reliability Study

    NASA Technical Reports Server (NTRS)

    Pettit, Duane; Turnbull, Andrew; Roelant, Henk A. (Technical Monitor)

    2001-01-01

    This reliability study was performed in order to provide the aviation community with an estimate of Complex General Aviation (GA) Aircraft System reliability. To successfully improve the safety and reliability for the next generation of GA aircraft, a study of current GA aircraft attributes was prudent. This was accomplished by benchmarking the reliability of operational Complex GA Aircraft Systems. Specifically, Complex GA Aircraft System reliability was estimated using data obtained from the logbooks of a random sample of the Complex GA Aircraft population.

  8. Cable Tensiometer for Aircraft

    NASA Technical Reports Server (NTRS)

    Nunnelee, Mark (Inventor)

    2008-01-01

    The invention is a cable tensiometer that can be used on aircraft for real-time, in-flight cable tension measurements. The invention can be used on any aircraft cables with high precision. The invention is extremely light-weight, hangs on the cable being tested and uses a dual bending beam design with a high mill-volt output to determine tension.

  9. Lightning protection of aircraft

    NASA Technical Reports Server (NTRS)

    Fisher, F. A.; Plumer, J. A.

    1977-01-01

    The current knowledge concerning potential lightning effects on aircraft and the means that are available to designers and operators to protect against these effects are summarized. The increased use of nonmetallic materials in the structure of aircraft and the constant trend toward using electronic equipment to handle flight-critical control and navigation functions have served as impetus for this study.

  10. Civil aircraft accident investigation.

    PubMed

    Haines, Daniel

    2013-01-01

    This talk reviews some historic aircraft accidents and some more recent. It reflects on the division of accident causes, considering mechanical failures and aircrew failures, and on aircrew training. Investigation results may lead to improved aircraft design, and to appropriate crew training. PMID:24057309

  11. Characterization of emissions from commercial aircraft engines during the Aircraft Particle Emissions eXperiment (APEX) 1 to 3

    EPA Science Inventory

    The fine particulate matter emissions from aircraft operations at large airports located in areas of the U. S. designated as non-attainment for the National Ambient Air Quality Standard for PM-2.5 are of major environmental concern. PM emissions data for commercial aircraft engin...

  12. Small Aircraft Data Distribution System

    NASA Technical Reports Server (NTRS)

    Chazanoff, Seth L.; Dinardo, Steven J.

    2012-01-01

    The CARVE Small Aircraft Data Distribution System acquires the aircraft location and attitude data that is required by the various programs running on a distributed network. This system distributes the data it acquires to the data acquisition programs for inclusion in their data files. It uses UDP (User Datagram Protocol) to broadcast data over a LAN (Local Area Network) to any programs that might have a use for the data. The program is easily adaptable to acquire additional data and log that data to disk. The current version also drives displays using precision pitch and roll information to aid the pilot in maintaining a level-level attitude for radar/radiometer mapping beyond the degree available by flying visually or using a standard gyro-driven attitude indicator. The software is designed to acquire an array of data to help the mission manager make real-time decisions as to the effectiveness of the flight. This data is displayed for the mission manager and broadcast to the other experiments on the aircraft for inclusion in their data files. The program also drives real-time precision pitch and roll displays for the pilot and copilot to aid them in maintaining the desired attitude, when required, during data acquisition on mapping lines.

  13. Aircraft operations management manual

    NASA Technical Reports Server (NTRS)

    1992-01-01

    The NASA aircraft operations program is a multifaceted, highly diverse entity that directly supports the agency mission in aeronautical research and development, space science and applications, space flight, astronaut readiness training, and related activities through research and development, program support, and mission management aircraft operations flights. Users of the program are interagency, inter-government, international, and the business community. This manual provides guidelines to establish policy for the management of NASA aircraft resources, aircraft operations, and related matters. This policy is an integral part of and must be followed when establishing field installation policy and procedures covering the management of NASA aircraft operations. Each operating location will develop appropriate local procedures that conform with the requirements of this handbook. This manual should be used in conjunction with other governing instructions, handbooks, and manuals.

  14. Why aircraft disinsection?

    PubMed Central

    Gratz, N. G.; Steffen, R.; Cocksedge, W.

    2000-01-01

    A serious problem is posed by the inadvertent transport of live mosquitoes aboard aircraft arriving from tropical countries where vector-borne diseases are endemic. Surveys at international airports have found many instances of live insects, particularly mosquitoes, aboard aircraft arriving from countries where malaria and arboviruses are endemic. In some instances mosquito species have been established in countries in which they have not previously been reported. A serious consequence of the transport of infected mosquitoes aboard aircraft has been the numerous cases of "airport malaria" reported from Europe, North America and elsewhere. There is an important on-going need for the disinsection of aircraft coming from airports in tropical disease endemic areas into nonendemic areas. The methods and materials available for use in aircraft disinsection and the WHO recommendations for their use are described. PMID:10994283

  15. Hypersonic reconnaissance aircraft

    NASA Technical Reports Server (NTRS)

    Bulk, Tim; Chiarini, David; Hill, Kevin; Kunszt, Bob; Odgen, Chris; Truong, Bon

    1992-01-01

    A conceptual design of a hypersonic reconnaissance aircraft for the U.S. Navy is discussed. After eighteen weeks of work, a waverider design powered by two augmented turbofans was chosen. The aircraft was designed to be based on an aircraft carrier and to cruise 6,000 nautical miles at Mach 4;80,000 feet and above. As a result the size of the aircraft was only allowed to have a length of eighty feet, fifty-two feet in wingspan, and roughly 2,300 square feet in planform area. Since this is a mainly cruise aircraft, sixty percent of its 100,000 pound take-off weight is JP fuel. At cruise, the highest temperature that it will encounter is roughly 1,100 F, which can be handled through the use of a passive cooling system.

  16. CID Aircraft slap-down

    NASA Technical Reports Server (NTRS)

    1984-01-01

    In this photograph the B-720 is seen during the moments of initial impact. The left wing is digging into the lakebed while the aircraft continues sliding towards wing openers. In 1984 NASA Dryden Flight Research Facility and the Federal Aviation Administration (FAA) teamed-up in a unique flight experiment called the Controlled Impact Demonstration (CID). The test involved crashing a Boeing 720 aircraft with four JT3C-7 engines burning a mixture of standard fuel with an additive, Anti-misting Kerosene (AMK), designed to supress fire. In a typical aircraft crash, fuel spilled from ruptured fuel tanks forms a fine mist that can be ignited by a number of sources at the crash site. In 1984 the NASA Dryden Flight Research Facility (after 1994 a full-fledged Center again) and the Federal Aviation Administration (FAA) teamed-up in a unique flight experiment called the Controlled Impact Demonstration (CID), to test crash a Boeing 720 aircraft using standard fuel with an additive designed to supress fire. The additive, FM-9, a high-molecular-weight long-chain polymer, when blended with Jet-A fuel had demonstrated the capability to inhibit ignition and flame propagation of the released fuel in simulated crash tests. This anti-misting kerosene (AMK) cannot be introduced directly into a gas turbine engine due to several possible problems such as clogging of filters. The AMK must be restored to almost Jet-A before being introduced into the engine for burning. This restoration is called 'degradation' and was accomplished on the B-720 using a device called a 'degrader.' Each of the four Pratt & Whitney JT3C-7 engines had a 'degrader' built and installed by General Electric (GE) to break down and return the AMK to near Jet-A quality. In addition to the AMK research the NASA Langley Research Center was involved in a structural loads measurement experiment, which included having instrumented dummies filling the seats in the passenger compartment. Before the final flight on December 1

  17. Price Determination of General Aviation, Helicopter, and Transport Aircraft

    NASA Technical Reports Server (NTRS)

    Anderson, Joseph L.

    1978-01-01

    The NASA must assess its aeronautical research program with economic as well as performance measures. It thus is interested in what price a new technology aircraft would carry to make it attractive to the buyer. But what price a given airplane or helicopter will carry is largely a reflection of the manufacturer's assessment of the competitive market into which the new aircraft will be introduced. The manufacturer must weigh any new aerodynamic or system technology innovation he would add to an aircraft by the impact of this innovation upon the aircraft's economic attractiveness and price. The intent of this paper is to give price standards against which new technologies and the NASA's research program can be assessed. Using reported prices for general aviation, helicopter, and transport aircraft, price estimating relations in terms of engine and airframe characteristics have been developed. The relations are given in terms of the aircraft type, its manufactured empty weight, engine weight, horsepower or thrust. Factors for the effects of inflation are included to aid in making predictions of future aircraft prices. There are discussions of aircraft price in terms of number of passenger seats, airplane size and research and development costs related to an aircraft model, and indirectly as to how new technologies, aircraft complexity and inflation have affected these.

  18. 76 FR 59013 - Airworthiness Directives; Rolls-Royce plc (RR) RB211-Trent 800 Series Turbofan Engines

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-09-23

    ...-30-AD; Amendment 39-16657; AD 2011-08-07] RIN 2120-AA64 Airworthiness Directives; Rolls-Royce plc (RR... . SUPPLEMENTARY INFORMATION: Airworthiness Directive 2011-08-07, Amendment 39-16657 (76 FR 24798, May 3,...

  19. Identification of Aircraft Tubing by Rockwell Test

    NASA Technical Reports Server (NTRS)

    Knerr, Horace C.

    1930-01-01

    Seamless steel tubing is today the principal material of construction for aircraft. The commercial grade of tubing containing about 0.10 to 0.20% carbon at first used is being superseded by two grades which are approved by the army and navy, and which are also becoming standard for commercial airplanes.

  20. Turbulence in the air tubes of radiators for aircraft engines

    NASA Technical Reports Server (NTRS)

    Parsons, S R

    1921-01-01

    This report describes an investigation of the characteristics of flow in the air passages of aircraft radiators. The work was done by the National Bureau of Standards for the National Advisory Committee for Aeronautics.

  1. The Altitude Laboratory for the Test of Aircraft Engines

    NASA Technical Reports Server (NTRS)

    Dickinson, H C; Boutell, H G

    1920-01-01

    Report presents descriptions, schematics, and photographs of the altitude laboratory for the testing of aircraft engines constructed at the Bureau of Standards for the National Advisory Committee for Aeronautics.

  2. 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.

  3. OVRhyp, Scramjet Test Aircraft

    NASA Technical Reports Server (NTRS)

    Aslan, J.; Bisard, T.; Dallinga, S.; Draper, K.; Hufford, G.; Peters, W.; Rogers, J.

    1990-01-01

    A preliminary design for an unmanned hypersonic research vehicle to test scramjet engines is presented. The aircraft will be launched from a carrier aircraft at an altitude of 40,000 feet at Mach 0.8. The vehicle will then accelerate to Mach 6 at an altitude of 100,000 feet. At this stage the prototype scramjet will be employed to accelerate the vehicle to Mach 10 and maintain Mach 10 flight for 2 minutes. The aircraft will then decelerate and safely land.

  4. Some fighter aircraft trends

    NASA Technical Reports Server (NTRS)

    Spearman, L.

    1985-01-01

    Some basic trends in fighters are traced from the post World II era. Beginning with the first operational jet fighter, the P-80, the characteristics of subsequent fighter aircraft are examined for performance, mission capability, effectiveness, and cost. Characteristics presented include: power loading, wing loading, maximum speed, rate of climb, turn rate, weight and weight distribution, cost and cost distribution. The characteristics of some USSR aircraft are included for comparison. The trends indicate some of the rationale for certain fighter designs and some likely characteristics to be sought in future fighter aircraft designs.

  5. Tropospheric sampling with aircraft

    SciTech Connect

    Daum, P.H.; Springston, S.R.

    1991-03-01

    Aircraft constitute a unique environment which places stringent requirements on the instruments used to measure the concentrations of atmospheric trace gases and aerosols. Some of these requirements such as minimization of size, weight, and power consumption are general; others are specific to individual techniques. This review presents the basic principles and considerations governing the deployment of trace gas and aerosol instrumentation on an aircraft. An overview of common instruments illustrates these points and provides guidelines for designing and using instruments on aircraft-based measurement programs.

  6. Microwave imaging of aircraft

    NASA Astrophysics Data System (ADS)

    Steinberg, Bernard D.

    1988-12-01

    Three methods of imaging aircraft from the ground with microwave radar with quality suitable for aircraft target recognition are described. The imaging methods are based on a self-calibration procedure called adaptive beamforming that compensates for the severe geometric distortion inherent in any imaging system that is large enough to achieve the high angular resolution necessary for two-dimensional target imaging. The signal processing algorithm is described and X-band (3-cm)-wavelength experiments demonstrate its success on commercial aircraft flying into Philadelphia International Airport.

  7. Predicting Aircraft Noise Levels

    NASA Technical Reports Server (NTRS)

    Clark, B. J.

    1983-01-01

    Computer program developed for predicting aircraft noise levels either in flight or in ground tests. Noise sources include fan inlet and exhaust jet flap (for powered lift), core (combustor), turbine and airframe. Program written in FORTRAN IV.

  8. Aircraft parameter estimation

    NASA Technical Reports Server (NTRS)

    Iliff, Kenneth W.

    1987-01-01

    The aircraft parameter estimation problem is used to illustrate the utility of parameter estimation, which applies to many engineering and scientific fields. Maximum likelihood estimation has been used to extract stability and control derivatives from flight data for many years. This paper presents some of the basic concepts of aircraft parameter estimation and briefly surveys the literature in the field. The maximum likelihood estimator is discussed, and the basic concepts of minimization and estimation are examined for a simple simulated aircraft example. The cost functions that are to be minimized during estimation are defined and discussed. Graphic representations of the cost functions are given to illustrate the minimization process. Finally, the basic concepts are generalized, and estimation from flight data is discussed. Some of the major conclusions for the simulated example are also developed for the analysis of flight data from the F-14, highly maneuverable aircraft technology (HiMAT), and space shuttle vehicles.

  9. Aircraft Engine Emissions. [conference

    NASA Technical Reports Server (NTRS)

    1977-01-01

    A conference on a aircraft engine emissions was held to present the results of recent and current work. Such diverse areas as components, controls, energy efficient engine designs, and noise and pollution reduction are discussed.

  10. Solar thermal aircraft

    DOEpatents

    Bennett, Charles L.

    2007-09-18

    A solar thermal powered aircraft powered by heat energy from the sun. A heat engine, such as a Stirling engine, is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller. The heat engine has a thermal battery in thermal contact with it so that heat is supplied from the thermal battery. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

  11. Aircraft Safety Improvement

    NASA Technical Reports Server (NTRS)

    Kao, G.

    1985-01-01

    Fabrication and testing of honeycomb sandwich aircraft panels are discussed. Also described is the use of the following instruments: thermogravimetric analyzer, differential scanning calorimeter, limiting oxygen index, and infrared spectrometer.

  12. Laminar Flow Aircraft Certification

    NASA Technical Reports Server (NTRS)

    Williams, Louis J. (Compiler)

    1986-01-01

    Various topics telative to laminar flow aircraft certification are discussed. Boundary layer stability, flaps for laminar flow airfoils, computational wing design studies, manufacturing requirements, windtunnel tests, and flow visualization are among the topics covered.

  13. The Aircraft Morphing Program

    NASA Technical Reports Server (NTRS)

    Wlezien, R. W.; Horner, G. C.; McGowan, A. R.; Padula, S. L.; Scott, M. A.; Silcox, R. J.; Simpson, J. O.

    1998-01-01

    In the last decade smart technologies have become enablers that cut across traditional boundaries in materials science and engineering. Here we define smart to mean embedded actuation, sensing, and control logic in a tightly coupled feedback loop. While multiple successes have been achieved in the laboratory, we have yet to see the general applicability of smart devices to real aircraft systems. The NASA Aircraft Morphing program is an attempt to couple research across a wide range of disciplines to integrate smart technologies into high payoff aircraft applications. The program bridges research in seven individual disciplines and combines the effort into activities in three primary program thrusts. System studies are used to assess the highest- payoff program objectives, and specific research activities are defined to address the technologies required for development of smart aircraft systems. In this paper we address the overall program goals and programmatic structure, and discuss the challenges associated with bringing the technologies to fruition.

  14. Advanced hypersonic aircraft design

    NASA Technical Reports Server (NTRS)

    Utzinger, Rob; Blank, Hans-Joachim; Cox, Craig; Harvey, Greg; Mckee, Mike; Molnar, Dave; Nagy, Greg; Petersen, Steve

    1992-01-01

    The objective of this design project is to develop the hypersonic reconnaissance aircraft to replace the SR-71 and to complement existing intelligence gathering devices. The initial design considerations were to create a manned vehicle which could complete its mission with at least two airborne refuelings. The aircraft must travel between Mach 4 and Mach 7 at an altitude of 80,000 feet for a maximum range of 12,000 nautical miles. The vehicle should have an air breathing propulsion system at cruise. With a crew of two, the aircraft should be able to take off and land on a 10,000 foot runway, and the yearly operational costs were not to exceed $300 million. Finally, the aircraft should exhibit stealth characteristics, including a minimized radar cross-section (RCS) and a reduced sonic boom. The technology used in this vehicle should allow for production between the years 1993 and 1995.

  15. Aircraft of the future

    NASA Technical Reports Server (NTRS)

    Yeger, S.

    1985-01-01

    Some basic problems connected with attempts to increase the size and capacity of transport aircraft are discussed. According to the square-cubic law, the increase in structural weight is proportional to the third power of the increase in the linear dimensions of the aircraft when geomettric similarity is maintained, while the surface area of the aircraft increases according to the second power. A consequence is that the fraction of useful weight will decrease as aircraft increase in size. However, in flying-wing designs in which the whole load on the wing is proportional to the distribution of lifting forces, the total bending moment on the wing will be sharply reduced, enabling lighter construction. Flying wings may have an ultimate capacity of 3000 passengers.

  16. Depreciation of aircraft

    NASA Technical Reports Server (NTRS)

    Warner, Edward P

    1922-01-01

    There is a widespread, and quite erroneous, impression to the effect that aircraft are essentially fragile and deteriorate with great rapidity when in service, so that the depreciation charges to be allowed on commercial or private operation are necessarily high.

  17. Alternative jet aircraft fuels

    NASA Technical Reports Server (NTRS)

    Grobman, J.

    1979-01-01

    Potential changes in jet aircraft fuel specifications due to shifts in supply and quality of refinery feedstocks are discussed with emphasis on the effects these changes would have on the performance and durability of aircraft engines and fuel systems. Combustion characteristics, fuel thermal stability, and fuel pumpability at low temperature are among the factors considered. Combustor and fuel system technology needs for broad specification fuels are reviewed including prevention of fuel system fouling and fuel system technology for fuels with higher freezing points.

  18. ANALYSIS OF AIRCRAFT MOTIONS

    NASA Technical Reports Server (NTRS)

    Wingrove, R. C.

    1994-01-01

    This program was developed by Ames Research Center, in cooperation with the National Transportation Safety Board, as a technique for deriving time histories of an aircraft's motion from Air Traffic Control (ATC) radar records. This technique uses the radar range and azimuth data, along with the downlinked altitude data, to derive an expanded set of data which includes airspeed, lift, attitude angles (pitch, roll, and heading), etc. This technique should prove useful as a source of data in the investigation of commercial airline accidents and in the analysis of accidents involving aircraft which do not have onboard data recorders (e.g., military, short-haul, and general aviation). The technique used to determine the aircraft motions involves smoothing of raw radar data. These smoothed results, in combination with other available information (wind profiles and aircraft performance data), are used to derive the expanded set of data. This program uses a cubic least-square fit to smooth the raw data. This moving-arc procedure provides a smoothed time history of the aircraft position, the inertial velocities, and accelerations. Using known winds, these inertial data are transformed to aircraft stability axes to provide true airspeed, thrust-drag, lift, and roll angle. Further derivation, based on aircraft dependent performance data, can determine the aircraft angle of attack, pitch, and heading angle. Results of experimental tests indicate that values derived from ATC radar records using this technique agree favorably with airborne measurements. This program is written in FORTRAN IV to be executed in the batch mode, and has been implemented on a CDC 6000 series computer with a central memory requirement of 64k (octal) of 60 bit words.

  19. Aircraft Power-Plant Instruments

    NASA Technical Reports Server (NTRS)

    Sontag, Harcourt; Brombacher, W G

    1934-01-01

    This report supersedes NACA-TR-129 which is now obsolete. Aircraft power-plant instruments include tachometers, engine thermometers, pressure gages, fuel-quantity gages, fuel flow meters and indicators, and manifold pressure gages. The report includes a description of the commonly used types and some others, the underlying principle utilized in the design, and some design data. The inherent errors of the instrument, the methods of making laboratory tests, descriptions of the test apparatus, and data in considerable detail in the performance of commonly used instruments are presented. Standard instruments and, in cases where it appears to be of interest, those used as secondary standards are described. A bibliography of important articles is included.

  20. On the use of a compact optical fiber sensor system in aircraft structural health monitoring

    NASA Astrophysics Data System (ADS)

    Mrad, Nezih; Guo, Honglei; Xiao, Gaozhi; Rocha, Bruno; Sun, Zhigang

    2012-06-01

    Structural Health Monitoring (SHM) has been identified as an area of significant potential for advanced aircraft maintenance programs that ensure continued airworthiness, enhanced operational safety and reduced life cycle cost. Several sensors and sensory systems have been developed for the implementation of such health monitoring capability. Among a wide range of developed technologies, fiber optic sensor technology, in particular fiber Bragg grating based emerged as one of the most promising for aircraft structural applications. This paper is set to explore the suitability of using a new Fiber Bragg Grating sensor (FBG) system developed for operation in two modes, low and high speed sensing modes, respectively. The suitability of the system for potential use in aircraft load monitoring and damage detection applications has been demonstrated. Results from FBG sensor system were in good agreement with results from conventional resistive strain gauges, validating this capability for load monitoring. For damage detection, the FBG sensor system was able to detect acoustic waves generated 52 inches (1.32 m) away. The initial results, obtained in a full stale experimentation, demonstrate the potential of using FBG sensors for both load monitoring and damage detection in aircraft environment.

  1. 40 CFR 87.31 - Standards for exhaust emissions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 20 2010-07-01 2010-07-01 false Standards for exhaust emissions. 87.31... (CONTINUED) CONTROL OF AIR POLLUTION FROM AIRCRAFT AND AIRCRAFT ENGINES Exhaust Emissions (In-Use Aircraft Gas Turbine Engines) § 87.31 Standards for exhaust emissions. (a) Exhaust emissions of smoke from...

  2. 75 FR 16660 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-04-02

    ...-064-AD; Amendment 39-16252; AD 2010-07-07] RIN 2120-AA64 Airworthiness Directives; SOCATA Model TBM..., 2010 (75 FR 89). That NPRM proposed to correct an unsafe condition for the specified products. The MCAI... air commerce by prescribing regulations for practices, methods, and procedures the Administrator...

  3. 75 FR 13239 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-03-19

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; SOCATA Model TBM... methods: Federal eRulemaking Portal: Go to http://www.regulations.gov . Follow the instructions for... practices, methods, and procedures the Administrator finds necessary for safety in air commerce....

  4. 76 FR 30295 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-25

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; SOCATA Model TBM... proposed AD by July 11, 2011. ADDRESSES: You may send comments by any of the following methods: Federal e... air commerce by prescribing regulations for practices, methods, and procedures the Administrator...

  5. 76 FR 4216 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-01-25

    ...-041-AD; Amendment 39-16575; AD 2011-02-02] RIN 2120-AA64 Airworthiness Directives; SOCATA Model TBM... (73 FR 54067, September 18, 2008), the Director of the Federal Register approved the incorporation by... September 28, 2010 (75 FR 59658), and proposed to supersede AD 2008-19-06, Amendment 39- 15673 (73 FR...

  6. 75 FR 59658 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-09-28

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; SOCATA Model TBM... may send comments by any of the following methods: Federal eRulemaking Portal: Go to http://www... proposed AD. Discussion On September 8, 2008, we issued AD 2008-19-06, Amendment 39-15673 (73 FR...

  7. 75 FR 89 - Airworthiness Directives; SOCATA Model TBM 700 Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-04

    ... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; SOCATA Model TBM... following methods: Federal eRulemaking Portal: Go to http://www.regulations.gov . Follow the instructions..., methods, and procedures the Administrator finds necessary for safety in air commerce. This regulation...

  8. 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...

  9. 77 FR 61539 - Airworthiness Directives; DASSAULT AVIATION Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-10-10

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034...; ] DEPARTMENT OF TRANSPORTATION Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; DASSAULT AVIATION Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice...

  10. 77 FR 52203 - Airworthiness Directives; Goodyear Aviation Tires

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-08-29

    ...'' under the DOT Regulatory Policies and Procedures (44 FR 11034, February 26, 1979), (3) Will not affect... Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2012-0881; Directorate Identifier 2012-CE-029-AD; Amendment 39-17164; AD 2012-17-01] RIN 2120-AA64 Airworthiness Directives; Goodyear...

  11. 77 FR 44511 - Airworthiness Directives; Alpha Aviation Concept Limited Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-07-30

    ... 12866, (2) Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Alpha Aviation Concept Limited Airplanes AGENCY: Federal Aviation Administration (FAA), Department of Transportation...

  12. 78 FR 23458 - Airworthiness Directives; Dassault Aviation Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-19

    ... and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska; and... Federal Aviation Administration 14 CFR Part 39 [Docket No. FAA-2013-0306; Directorate Identifier 2013-NM-049-AD; Amendment 39-17417; AD 2013-07-13] RIN 2120-AA64 Airworthiness Directives; Dassault...

  13. 77 FR 16186 - Airworthiness Directives; Dassault Aviation Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-03-20

    ... Order 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Dassault Aviation Airplanes AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking...

  14. 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...

  15. 78 FR 66668 - Airworthiness Directives; Eurocopter France (Eurocopter) Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-11-06

    ... Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska... Federal Aviation Administration 14 CFR Part 39 RIN 2120-AA64 Airworthiness Directives; Eurocopter France... written comments, data, or views. We also invite comments relating to the economic, environmental,...

  16. 78 FR 22213 - Airworthiness Directives; Eurocopter France Helicopters

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-04-15

    ... Policies and Procedures (44 FR 11034, February 26, 1979); 3. Will not affect intrastate aviation in Alaska... France Helicopters AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of proposed rulemaking (NPRM). SUMMARY: We propose to adopt a new airworthiness directive (AD) for Eurocopter...

  17. 78 FR 78701 - Airworthiness Directives; The Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-12-27

    ...We are adopting a new airworthiness directive (AD) for certain The Boeing Company Model 737-300, -400, and -500 series airplanes. This AD was prompted by fuel system reviews conducted by the manufacturer. This AD requires, depending on airplane configuration, replacing fuel pump power control relays with new relays having a ground fault interrupter (GFI) feature, installing ground studs and a......

  18. 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...

  19. 78 FR 49217 - Airworthiness Directives; the Boeing Company Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-08-13

    ... Register on October 11, 2012 (77 FR 61731). That NPRM proposed to retain repetitive inspections of the in... changes to the airworthiness limitations section. Actions Since Previous NPRM (77 FR 61731, October 11, 2012) Was Issued Since we issued the previous NPRM (77 FR 61731, October 11, 2012), we have...

  20. 78 FR 44473 - Airworthiness Directives; Dassault Aviation Airplanes

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-07-24

    ... 12866; 2. Is not a ``significant rule'' under the DOT Regulatory Policies and Procedures (44 FR 11034...). SUMMARY: We propose to adopt a new airworthiness directive (AD) for all DASSAULT AVIATION Model FAN JET... cartridges, which could affect the capability to extinguish a fire in an engine, auxiliary power unit,...