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United States Department of Transportation United States Department of Transportation

Advisory Circulars (ACs)

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Number, title, description, or office

Advisory Circulars (ACs) search results
Number Title Status Office Date
91-53A Noise Abatement Departure Profile

Describes acceptable criteria for safe noise abatement departure profiles (NADP) for subsonic turbojet-powered airplanes with a maximum certificated gross takeoff weight of more than 75,000 pounds.

Active AFS-820 1993-07-22
91-50 Importance of Transponder Operation and Altitude Reporting

Provides information and guidance concerning the importance of transponder operation and altitude reporting in the National Airspace System.

Active AFS-820 1977-08-24
91-69A Seaplane Safety for 14 CFR Part 91 Operators

Provides revised information to FAR Part 91 seaplane operators regarding seaplane preflight, oral briefings for seaplane passengers, the use of safety belts and shoulder harnesses in seaplanes, escape/egress after capsizing, water survival, and flotation gear for seaplane occupants.

Active AFS-800 1999-11-19
91-61 A Hazard in Aerobatics: Effects of G-Forces of Pilots

Provides background information on G-forces, their effect on the human body and their role in safe flying, and offers suggestions for avoiding problems caused by acceleration encountered in aerobatic maneuvers.

Active AFS-800/AAM-500 1984-02-28
91-56B Continuing Structural Integrity Program for Airplanes

Provides guidance material to manufacturers and operators of transport category airplanes for use in developing a continuing structural integrity program to ensure safe operation of older airplanes throughout their operational lives.

Active ANM-115 2008-03-07
91-81 Dual J80 Route Procedure

This advisory circular provides information to customers of the National Airspace System (NAS) in regards to the implementation and use of the dual J80 route procedure.

Active AJR-1 2008-05-13
91-77 General Aviation, Coded Departure Routes (CDR)

Provides guidance to customers of the National Airspace System on the use of Coded Departure Routes.

Active AJR-1 2007-06-01
91-33A Use of Alternate Grades of Aviation Gasoline for Grade 80/87, and Use of Automotive Gasoline

Provides information relating to the use of alternate grades of gasoline when grade 80/87 aviation is not available and the resultant effects of the use of the alternate fuels which have higher TEL (tetraethyl lead) content.

Active ANE-110 1984-07-18
91-32B Safety in and Around Helicopters

This Advisory Circular (AC) provides safety guidelines for persons associated with helicopter operations and suggests ways to avoid hazards and reduce the risk of accidents.

Active AFS-820 1997-02-18
91-84 Fractional Ownership Programs

This advisory circular (AC) provides backgroung information, and describes fractional ownership programs and te application process for obtaining management specifications (MSpecs) to operate under Title 14 of the Code of Federal Regulations (14CFR) part 91 subpart k (part 91K)

Active AFS-800 2009-03-31
91-80 Air Traffic Control System Command Center (ATCSCC) Hotlines

This advisory circular provides guidance to customers of the National Airspace System (NAS) in regard to the use of and participation on ATCSCC hotlines.

Active AJR-1 2008-06-24
91-82A Fatigue Management Programs for In-Service Issues

a.This advisory circular (AC) provides guidance on developing and implementing a Fatigue Management Program (FMP) to address in-service issues for metallic fatigue critical structure.

Active ACE-100 2011-08-23
91-58A Uus of Pyrotechnic isual Distress Signaling Devices

This advisory circular (AC) suggests standards and procedures for the acquisition, use, and storage of pyrotechnic visual distress signaling devices that are intended for use in aircraft emergencies.

Active AFS-820 2000-02-10
91-73B Parts 91 and 135 Single Pilot, Flight School Procedures During Taxi Operations

This advisory circular (AC) provides guidelines for the development and implementation of standard operating procedures (SOP) for conducting safe aircraft operations during taxiing to avoid causing a runway incursion.

Active AFS-200 2012-07-30
91-88 Electronics News Gathering Operations

This advisory circular (AC) provides recommendations to ensure the safety of electronic news gathering (ENG) operations.

Active AFS-800 2016-06-28
91-68 Pilot Qualification and Operation of all Surplus Military Turbine-Powered Airplanes

Provides information and guidance to pilots who wish to become qualified to operate surplus military turbine-powered airplanes under a letter of authorization, as required by operating limitations issued for this type of aircraft.

Active AFS-820 1992-02-25
91-66 Noise Abatement for Helicopters

Presents guidelines intended to assist pilots, operators, managers, and other interested persons in the establishment of effective noise reduction procedures when operating helicopters.

Active AFS-840 1987-06-04
91-72 Waivers of Provisions of Title 14 of the Code of Federal Regulations Part 91

This AC provides information concerning the submission of applications for the issuance of waivers of certain sections of Title 14 of the Code of Federal Regulations (14 CFR) part 91.

Active AFS-800 1996-11-08
91-65 Use of Shoulder Harness in Passenger Seats

Provides guidance and information to pilots, passengers, and maintenance personnel regarding the crash survivability aspects of small aircraft equipped with shoulder harnesses and the hazards of modifying seats, adding appendages to seats, and storage of articles, beneath the seats.

Active AFS-820 1986-08-04
91-62A Use of Child Seats in Aircraft

Provides information to assist the public in the proper use of child seats aboard aircraft and provides precautions so all occupants are able to exit rapidly from aircraft during emergencies.

Active AIR-120 1992-10-15
91-75 Attitude Indicator

Provides a method to substitute an approved attitude indicator for the rate-of-turn indicator mandated by Title 14 of the Code of Federal Regulations (14 CFR) part 91, section 91.205(d)(3).

Active AFS-400 2003-06-25
91-48 Acrobatics-Precision Flying with a Purpose

Provides information to persons who are interested in acrobatic flying to improve their piloting skills as recreation, sport, or as a competitive activity.

Active AFS-820 1977-06-29
91-71 Operation of Hot Air Balloons with Airborne Heaters

Provides guidance for the safe and practical operation of hot air balloons with airborne heaters in compliance with appropriate portions of 14 CFR 91.

Active AFS-820 1996-06-13
91-26 Maintenance and Handling of Airdriven Gyroscopic Instruments

Advises operators of general aviation aircraft of the need for proper maintenance of air-driven gyroscopic instruments and associated air filters.

Active AFS-310 1969-07-02
91-46 Gyroscopic Instruments - Good Operating Practices

Issued to re-emphasize to general aviation instrument-rated pilots the need to determine the proper operation of gyroscopic instruments, the importance of instrument crosschecks and proficiency in partial-panel operations.

Active AFS-350 1977-02-04
91-44A Operational and Maintenance Practices for Emergency Locator Transmitters and Receivers - Change 1

Combines and updates material in several Advisory Circulars on the subject of emergency locator transmitters (ELT) receivers for airborne service.

Active AFS-300 1980-12-12
91-36D Visual Flight Rules (VFR) Flight Near Noise-Sensitive Areas

Encourages pilots making VFR flights near noise-sensitive areas to fly at altitudes higher than the minimum permitted by regulation and on flight paths, which will reduce aircraft noise in such area.

Active ATO-R 2004-09-17
91-59A Inspection and Care of General Aviation Aircraft Exhaust Systems - Change 1

This advisory circular (AC) emphasizes the safety hazards of poorly maintained aircraft exhaust systems (reciprocating powerplants) and highlights points at which exhaust system failures occur.

Active AFS-300 2007-07-23
91-86 Guidance on Carrying Noise Certification Documents On Board Aircraft Operating Outside the United States

a. The Federal Aviation Administration (FAA) is amending its operating rules to require U.S. operators flying outside the United States to carry aircraft noise certification information on board the aircraft.

Active AEE-100 2010-02-23
91-63D Temporary Flight Restrictions (TFR) and Flight Limitations

This advisory circular (AC): (1) explains and defines the different flight limitations and Temporary Flight Restrictions (TFRs); (2) describes conditions under which the Federal Aviation Administration (FAA) may establish a flight limitation or TFR area; (3) explains which FAA offices are authorized to issue flight limitations or TFRs; (4) lists the agencies/offices from which the FAA will accept requests to establish a flight limitation or TFR area; and (5) provides an appendix for each type of flight limitation or restriction.

Active AJV-1 2015-12-09
91-87 Ejection Seat Training Program

This advisory circular (AC) describes an acceptable means, but not the only means, of developing an ejection seat training program (ESTP).

Active AFS-800 2016-02-26
91-74B Pilot Guide: Flight In Icing Conditions

This advisory circular (AC) contains updated and additional information for the pilots of airplanes under Title 14 of the Code of Federal Regulations (14 CFR) parts 91, 121, 125, and 135.

Active AFS-800 2015-10-08
91-91 Maintaining Public Aircraft

This AC is intended to provide guidance for developing maintenance and inspection programs for aircraft operated as public aircraft.

Active AFS-300 2016-10-19
91-89 Mitsubishi MU-2B Training Program

This AC provides guidance and standardized methods for meeting the training requirements outlined in Title 14 of the Code of Federal Regulations (14 CFR) Part 91 Subpart N, Mitsubishi MU-2B Series Special Training, Experience, and Operating Requirements, for Mitsubishi MU-2B aircraft.

Active AFS-800 2016-07-22
91-37B Truth in Leasing

This advisory circular (AC) provides information and guidance for lessees and conditional buyers of U.S.

Active AFS-800 2016-02-10
91-76A Hazard Associated with Sublimation of Solid Carbon Dioxide (Dry Ice) Aboard Aircraft

This AC discusses the potential hazard associated with the sublimation of dry ice aboard aircraft.

Active AAM-630 2009-05-22
91-90 Part 91 Approved Inspection Programs

This advisory circular (AC) prescribes the procedures to develop and submit aircraft owner- and operator-specific inspection programs in accordance with an inspection program selected under the provisions of Title 14 of the Code of Federal Regulations (14 CFR) part 91, § 91.409(f)(4), and satisfies the requirements of § 91.409(g) for review and approval by the Federal Aviation Administration (FAA).

Active AFS-300 2017-04-05