Advisory Circulars

Provides guidance material on a means, but not the only means, of compliance with the FAR concerning (1) conduct of full-scale emergency evacuation demonstrations, and (2) use analysis and tests for emergency evacuation demonstrations in lieu of conducting an actual demonstration.

Date Cancelled: 03-12-2012

Date Cancelled: 10-24-2008
Cancelled By: 25.795-2A

Date Cancelled: 10-24-2008
Cancelled By: 25.795-1A

Provides information and guidance regarding an acceptable means, but not the only means, of compliance with the portions of Sections 25.785 and 121.311 of the FAR, which deals with flight attendant seats.

Date Cancelled: 05-11-2010

Sets forth acceptable means of compliance with the provisions of Part 25 of the Federal Aviation Regulations (FAR) dealing with the certification requirements of fuselage doors. Guidance information is provided for showing compliance with structural and functional safety standards for doors and their operating systems. The intent of the requirements and some acceptable means of compliance are discussed. Other means are acceptable if they meet the intent of the regulations. For the propose of showing compliance with section 25.783 of FAR, hatches and exits are also considered to be doors.

Date Cancelled: 04-25-2005
Cancelled By: 25.783-1A

Provides guidance material for acceptable means for demonstrating compliance with the provisions of part 25 of the FAR dealing with the design requirements for transport category airplanes to preclude the aeroelastic instabilities of flutter, divergence and control reversal.

Date Cancelled: 07-23-1998
Cancelled By: 25.629-1A

Provides guidance for compliance with the provisions of 14 CFR Part 25 of the Federal Aviation Regulations (FAR) pertaining to the damage-tolerance and fatigue evaluation requirements for transport category aircraft structure. It also provides guidelines for the evaluation of scatter factors for the determination of life for parts categorized as safe-life.

Date Cancelled: 01-13-2011

Provides information and guidance regarding compliance with the provisions of Part 25 of the Federal Aviation Regulations applicable to dynamic testing of seats intended for use in transport category airplanes.

Date Cancelled: 01-10-2006
Cancelled By: 25.562-1B

Sets forth an acceptable means , but not the only means, of demonstrating compliance with the provisions of part 25 of the Federal Aviation Regulations (FAR) related to the minimum speed margin between design cruise speed and design dive speed for transport category airplanes.

Date Cancelled: 09-29-2000
Cancelled By: 25.335-1A

Provides instructions to ensure continued airworthiness of structural repairs on transport category airplanes. It addresses the approval procedures to follow when making structural repairs to structure certificated under the damage tolerance requirements of Section 25.571 of FAR, Amendment 25-45, and to type designs with Supplemental Inspection Documents, which were based on these criteria.

Date Cancelled: 11-20-2007
Cancelled By: 25.1529-1A

Provides guidance for certification of airframe ice protection systems on transport category airplanes.

Date Cancelled: 05-07-2004
Cancelled By: 25.1419-1A

Date Cancelled: 10-22-2007
Cancelled By: 25.1357-1A

Date Cancelled: 10-22-2007
Cancelled By: 25.1353-1A

Describes acceptable means for showing compliance with certain requirements of Title 14, CFR, of FAR 25.1329, Flight Guidance System. While Part 25 contains the airworthiness standards applicable to transport category airplanes, the guidance in this AC pertains to the functions of autopilots, as well as any interactions with stability augmentation and trim functions.

Date Cancelled: 07-17-2006
Cancelled By: 25.1329-1B

This advisory circular (AC) describes the compliance process for the “Enhanced Airworthiness Program for Airplane Systems/Fuel Tank Safety (EAPAS/FTS)” rule. That rule requires design approval holders (DAH) to develop instructions for continued airworthiness (ICA) consisting of maintenance and inspection tasks, intervals and procedures for the representative airplane’s electrical wiring interconnection system (EWIS) for each affected type design. The DAH must also review any fuel tank system ICA it has developed in compliance with Special Federal Aviation Regulation (SFAR) 88 in order to ensure compatibility with the EWIS ICA, including minimizing redundant requirements. The DAH must then submit the EWIS ICA to the FAA Oversight Office for review and approval.

Date Cancelled: 05-04-2007

Provides guidance on the selection, documentation, and control of Certification Maintenance Requirements (CMR’s).

Date Cancelled: 10-03-2011

This Advisory Circular (AC) provides acceptable certification methods, but not necessarily the only acceptable methods, for demonstrating compliance with the crashworthiness requirements of part 25, as amended through Amendment 25-112, of Title 14 of the Code of Federal Regulations (14 CFR) for transport category airplanes. The guidance in this AC is not mandatory nor a regulation

Date Cancelled: 05-18-2009
Cancelled By: 25-17A

Date Cancelled: 03-14-2000
Cancelled By: 25-22

Provides an acceptable means of compliance with Part 23 of the FAR for type certification of certain small airplanes.

Date Cancelled: 06-21-2007
Cancelled By: 25-11A

This advisory circular (AC) sets forth a method of compliance with the requirements of Part 25 of the Federal Aviation Regulations (FAR) pertaining to installations of miscellaneous, nonrequired electrical equipment in transport category airplanes. It is for guidance purposes and provides an example of a method of compliance that has been found acceptable. Because the method of compliance presented in this AC is not mandatory, the terms "shall" and "must" used in this AC apply only to an applicant who chooses to follow this particular method without deviation. The applicant may elect to follow an alternate method provided the alternate method is also found acceptable by the FAA.

Date Cancelled: 07-22-2010

This advisory circular (AC) provides guidance for the flight test evaluation of transport category airplanes. This AC includes flight test methods and procedures to show compliance with the regulations contained in subpart B of Title 14, Code of Federal Regulations (14 CFR) part 25, which address airplane performance and handling characteristics. Part 25 has been amended significantly since the last revision of this AC and, likewise, guidance and policy have changed in many areas as experience has been gained. During this time period, technology has advanced as well, resulting in a need for new or modified test techniques. This revision, AC 25-7B, adds acceptable means of compliance for the regulatory changes associated with amendments 108, 109, and 115 to part 25, and a revised means of compliance for expansion of takeoff and landing data for higher airport elevations. Means of compliance associated with flight in icing conditions was removed as this material is now contained in AC 25-25.

Date Cancelled: 10-16-2012

This advisory circular (AC) provides guidance for the flight test evaluation of transport category airplanes. This AC includes flight test methods and procedures to show compliance with the regulations contained in subpart B of Title 14, Code of Federal Regulations (14 CFR) part 25, which address airplane performance and handling characteristics. Part 25 has been amended significantly since the last revision of this AC and, likewise, guidance and policy have changed in many areas as experience has been gained. During this time period, technology has advanced as well, resulting in a need for new or modified test techniques. This revision, AC 25-7B, adds acceptable means of compliance for the regulatory changes associated with amendments 108, 109, and 115 to part 25, and a revised means of compliance for expansion of takeoff and landing data for higher airport elevations. Means of compliance associated with flight in icing conditions was removed as this material is now contained in AC 25-25.

Date Cancelled: 03-29-2011

Date Cancelled: 03-31-1998

Date Cancelled: 06-06-1995

Sets forth an acceptable means for complying with rules governing the installation of inertial navigation systems in transport category aircraft.

Date Cancelled: 05-08-2012