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United States Department of Transportation United States Department of Transportation

Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
91-67 Minimum Equipment Requirements for General Aviation Operations Under FAR Part 91

Describes acceptable methods for the operation of aircraft under Federal Aviation Regulations Part 91 with certain inoperative instrument and equipment, which are not essential for safe flight.

Cancelled AFS-820 1991-06-28
91-54 Automatic Reporting Systems Altimeter Setting and Other Operational Data

Provides guidelines for the development and installation of automatic reporting systems for altimeter setting and other operational data intended for use in connection with IFR operations.

Cancelled AFS-300 1979-02-26
91-73A Part 91 and Part 135 Single-Pilot Procedures during Taxi Operations

Provides guidance for the development and implementation of standard pilot procedures for conducting safe aircraft operations on the airport surface.

Cancelled AFS-800/200 2003-09-26
91-56 Continuing Structural Integrity Program for Large Transport Category 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.

Cancelled ANM-115 1998-04-29
91-70 [Large AC] Oceanic Operations

Contains information and guidance to be used by operators and pilots planning oceanic flights.

Cancelled AFS-400 1994-09-06
91-14D Altimeter Setting Sources

Provides the aviation public and industry with guidelines for setting up reliable altimeter setting sources.

Cancelled AFS-340 1979-04-09
91-45C Waivers: Aviation Events

Provides prospective aviation event sponsors and other interested parties with information necessary to assist in planning and conducting a safe aviation event.

Cancelled AFS-810 1990-02-01
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.

Cancelled AFS-300 1977-02-04
91-82 Fatigue Management Programs for Airplanes with Demonstrated Risk of Catastrophic Failure Due to Fatigue

a. This advisory circular (AC) provides guidance on developing and implementing a Fatigue Management Program (FMP).

Cancelled ACE-100 2008-04-29
91-36C 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.

Cancelled ATA-300 1984-10-19
91-83 Automatic Dependent Surveillance Broadcast (ADS-B)- Essential Services

This advisory circular provides guidance to customers of the National Airspace System (NAS) in regard to the nationwide implementation of Automatic Dependent Surveillance-Broadcast (ADS-B), Essential Services-Traffic Information Service?

Cancelled AJE-3 2008-10-01
91-74 Pilot Guide Flight in Icing Conditions Cancelled AFS-220 2002-12-12
91-56A Continuing Structural Integrity Program for Large Transport Category Airplanes Cancelled ANM-115 1998-04-29
91-16 Category II Operations - General Aviation Airplanes

Sets forth acceptable means by which Category II operations may be approved in accordance with FAR Parts 23, 25, 61, 91, 97, and 135.

Cancelled AFS-820 1967-08-07
91-78 Use of Class 1 or Class 2 Electronic Flight Bag (EFB)

This advisory circular (AC) provides aircraft owners, operators, and pilots operating aircraft under Title 14 of the Code of Federal Regulations (14 CFR) part 91, with information for removal of paper aeronautical charts and other documentation from the cockpit through the use of either portable or installed cockpit displays (electronic flight bags (EFB).

Cancelled AFS-800 2007-07-20
91-60 The Continued Airworthiness of Older Airplanes Cancelled AFS-310 1983-06-13
91-79A Mitigating the Risks of a Runway Overrun Upon Landing (Include Chg 1)

This advisory circular (AC) provides ways for pilots and airplane operators to identify, understand, and mitigate risks associated with runway overruns during the landing phase of flight.

Cancelled AFS-800 2014-09-17
91-85 Approval of Aircraft and Operators for flight in Reduced Vertical Cancelled AFS-400 2009-08-21
91-70C Oceanic and Remote Continental Airspace Operations

The Federal Aviation Administration (FAA) (“we”) developed this AC to provide general information and guidance for certificated and General Aviation (GA) operators (“you”) planning flights in oceanic and remote continental airspace.

Cancelled AFS-400 2023-10-04
91-51A Effect of Icing on Aircraft Control and Airplane Deice and Anti-Ice Systems

Provides information for pilots regarding the hazards of aircraft icing and the use of airplane deice and anti-ice systems.

Cancelled AFS-820 1996-07-19
91-63C Temporary Flight Restrictions (TFRs/TFR)

Describes the types of conditions under which the FAA may impose a temporary flight restriction.

Cancelled AJV-1 2004-05-20
91-76 Hazard Associated with Sublimation of Solid Carbon Dioxide (Dry Ice) Aboard Aircraft

Discusses the potential hazard associated with the sublimation of dry ice aboard aircraft. Precautionary measures and simple rules of thumb are indicated in order to preclude environmentally hazardous conditions affecting crews and passengers aboard aircraft.

Cancelled AAM-630 2004-09-30
91-58 Use of Pyrotechnic Visual Distress Signaling Devices in Aviation

Suggests standards and procedures for the acquisition, use, and storage of pyrotechnic visual distress signaling devices that are intended for use in aircraft emergencies.

Cancelled AFS-630 1982-05-27
91-57 Model Aircraft Operating Standards

Outlines, and encourages voluntary compliance with, safety standards for model aircraft operators.

Cancelled AJV-8 1981-06-09
91-63B Temporary Flight Restrictions (TFRs)

Describes the types of conditions under which the FAA may impose a temporary flight restriction. Also explains which elements have been delegated authority by the Administrator to issue TFR’s and lists the types of responsible agencies/offices from which the FAA will accept requests to establish TFR’s.

Cancelled ATO-120 1996-10-09
91-49 General Aviation Procedures for Flight in North Atlantic Minimum Navigation Performance Specifications Airspace

Sets forth acceptable means, but not the only means, of obtaining authorization to operate within specified airspace over the North Atlantic, designated as the NAT (North Atlantic) MNPS (Minimum Navigation Performance Specifications) airspace, after 0001 Greenwich Mean Time, Dec. 29, 1977.

Cancelled AFS-820 1977-08-23
91-73 Part 91 Pilot and Flight Crew Procedures during Taxi Operations and Part 135 Single-Pilot Operations

Provides guidance for the development and implementation of standard pilot procedures for conducting safe aircraft operations on the airport surface.

Cancelled AFS-800 2001-06-18
91-55 Reduction of Electrical System Failures following Aircraft Engine Starting

Warns general aviation aircraft owner/pilots and maintenance personnel of possible total electrical system failure following aircraft engine starting.

Cancelled AFS-310 1980-10-28
91-6A Water, Slush, and Snow on the Runway

Provides background and guidelines concerning the operation of turbojet aircraft with water, slush, and/or snow on the runway.

Cancelled AFS-223 1978-05-24
91-13C Cold Weather Operation of Aircraft

Provides background and guidelines relating to operation of aircraft in the colder climates where wide temperature changes may occur.

Cancelled AFS-820 1979-07-24
91-35 Noise, Hearing Damage, and Fatigue in General Aviation Pilots

Acquaints pilots with the hazards of regular exposure to cockpit noise. Especially pertinent are piston-engine, fixed-wing, and rotary-wing aircraft.

Cancelled AAM-620 1972-03-28
91-43 Unreliable Airspeed Indications

Alerts pilots to the possibility of erroneous airspeed/Mach indications that may be caused by blocking or freezing of the pilot system and advises of corrective action that can be taken.

Cancelled AFS-223 1975-06-26
91-79 Runway Overrun Prevention

Provides ways for pilots and operators to turbine powered airplanes to identify, understand, mitigate risks associated with runway overruns during the landing phase of flight.

Cancelled AFS-800 2007-11-06
91-22A Altitude Alerting Devices/Systems

Provides guidelines for designing, installing, and evaluating altitude alerting systems.

Cancelled AFS-400 1971-12-23
91-42D Hazards of Rotating Propeller and Helicopter Rotor Blades

Updates statistical information on propellers-and rotor-to-person accidents and offers suggestions to reduce the frequency of such accidents.

Cancelled AFS-310 1983-03-03
91-37A Truth in Leasing

Provides information and guidance for lessees and conditional buyers of U.S. registered large civil aircraft.

Cancelled AFS-820 1974-01-08
91-74A Pilot Guide: Flight in Icing Conditions

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

Cancelled AFS-800 2007-12-31
91-38A Large and Turbine-Powered Multiengine Airplanes, Part 91 Subpart D Cancelled AFS-340 1978-11-27
91-59 Inspection and Care of General Aviation Aircraft Exhaust Systems Cancelled AFS-340 1982-08-20
91-23A Pilot's Weight and Balance Handbook Cancelled 1977-01-01
91-70A Oceanic and International Operations

This advisory circular (AC) contains general information and guidance for operators planning oceanic flights, including authorizations needed for operations outside the continental United States.

Cancelled AFS-400 2010-08-12
91-57A Model Aircraft Operating Standards - Including Change 1

This advisory circular (AC) provides guidance to persons operating UnmannedAircraft (UA) for hobby or recreation purposes meeting the statutory definition of "model aircraft" contained in Section 336 of Public Law 112-95, the FAA Modernization and Reform Act of 2012.

Cancelled AFS-800 2016-01-11
91-70B Oceanic and Remote Continental Airspace Operations

This advisory circular (AC) contains general information and detailed guidance for operators planning flights in oceanic and remote continental airspace, including authorizations needed for operations outside the continental United States (CONUS).

Cancelled AFS-400 2023-10-04
91-85A Authorization of Aircraft and Operators for Flight in Reduced Vertical Separation Minimum (RVSM) Airspace

This advisory circular (AC) applies to all Operators conducting Reduced Vertical Separation Minimum (RVSM) operations.

Cancelled AFS-400 2016-07-21
91-57B Exception for Limited Recreational Operations of Unmanned Aircraft

This AC provides interim safety guidance to individuals operating unmanned aircraft, often referred to as drones, for recreational purposes under the statutory exception for limited recreational operations of unmanned aircraft (Title 49 of the United States Code (49 U.S.C) § 44809).

Cancelled AFS-800 2019-05-31