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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
91-92 Pilot’s Guide to a Preflight Briefing

This AC provides guidance for required preflight actions under Title 14 of the Code of Federal Regulations (14 CFR) part 91, § 91.103, which states, "Each pilot in command shall, before beginning a flight, become familiar with all available information concerning that flight.

Active AFS-800 2021-03-15
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
120-92D Safety Management Systems for Aviation Service Providers

This advisory circular (AC) provides information on implementing a Safety Management System (SMS) based on Title 14 of the Code of Federal Regulations (14 CFR) part 5 for aviation service providers operating or applying for a certificate or Letter of Authorization (LOA) to operate under 14 CFR part 91, § 91.147 or part 121 or 135. This AC may also be used by aviation organizations interested in receiving Federal Aviation Administration (FAA) acknowledgement of their voluntary development and implementation of an SMS that meets part 5 requirements.

Active AFS-900 2024-05-21
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
91-71 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
91-72 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. The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

Active AFS-800 1996-11-08
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
91-75 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). This AC excludes airplanes covered by section 91.205(d)(3)(i) and (ii).

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
91-68 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
91-26 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
91-86 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
91-90 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
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
91-89 Mitsubishi MU-2B Training Program

This AC is not mandatory and does not constitute a regulation; however, it may be used by training providers to meet the requirements of part 91 subpart N. Training providers may also use this AC as a reference for developing their own MU-2B training programs to submit for FAA approval pursuant to the requirements of part 91 subpart N.

Active AFS-800 2016-07-22
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
91-50 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
91-61 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
91-81 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
91-80 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
91-84 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
91-88 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
33.74/92-1B Turbine Engine Continued Rotation and Rotor Locking

This advisory circular (AC) provides guidance to demonstrate compliance with Title 14 of the Code of Federal Regulations (14 CFR), Section 33.74, Continued Rotation and Section 33.92, Rotor Locking Tests.

Active ANE-111 2016-06-23
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
91-44A 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
91-76A 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
91-85B Authorization of Aircraft and Operators for Flight in Reduced Vertical Separation Minimum (RVSM) Airspace

This advisory circular (AC) provides airworthiness and operational authorization guidance material for operators, pilots, certificate holders, and/or program managers conducting Title 14 of the Code of Federal Regulations (14 CFR) part 91, §§ 91.180 and 91.706 Reduced Vertical Separation Minimum (RVSM) operations.

Active AFS-400 2019-01-29
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
91-37B 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
91-79B Aircraft Landing Performance and Runway Excursion Mitigation

This AC provides ways to identify, understand, and manage the risks associated with the landing phase of flight.

Active AFS-200,800 2023-08-28
91-78A Use of Electronic Flight Bags

This AC provides operational guidance to aircraft owners, operators, and pilots operating aircraft under Title 14 of the
Code of Federal Regulations (14 CFR) part 91 who want to replace required paper information and/or utilize hosted database and software applications as part of Electronic Flight Bag (EFB) functionality.

Active AFS-800 2024-02-23
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.

Active AFS-400 2023-10-04
91-74B Pilot Guide: Flight In Icing Conditions

As a result of these updates and consolidating of information, AC 91-74A, Pilot Guide: Flight in Icing Conditions, dated December 31, 2007, and AC 91-51A, Effect of Icing on Aircraft Control and Airplane Deice and Anti-Ice Systems, dated July 19, 1996, are cancelled.

Active AFS-800 2015-10-08
120-91A Airport Obstacle Analysis

This AC describes acceptable methods and guidelines for developing takeoff and initial climbout airport obstacle analyses andin-flight procedures to comply with the intent of the regulatory requirements of Title 14 of the Code of Federal Regulations (14 CFR) part 121, §§ 121.177 and 121.189; part 135, §§ 135.367, 135.379, and 135.398; and other associated one-engine-inoperative (OEI) requirements relatingto turbine-engine-powered airplanes operated under parts 121 and 135.

Active AFS-400 2020-01-13
91-53A Noise Abatement Departure Profile

These departure profiles are consistent with the airworthiness standards required by the Federal Aviation Regulations Part 25 for type certification and Part 91 for general airplane operations.

Active AFS-820 1993-07-22
91-69A Seaplane Safety for 14 CFR Part 91 Operators

Most for-hire seaplane operations are subject to 14 CFR part 135, as well as part 91.

Active AFS-800 1999-11-19
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

The information in this AC pertains primarily to helicopter operations conducted under the provisions of Title 14 of the Code of Federal Regulations (14 CFR) part 91; however, the safety considerations discussed may be applicable to all helicopter operations.

Active AFS-820 1997-02-18
90-91K North American Route Program

Provides guidance to users of the National Air Space System for participation in the North American Route Program (NRP).

Active AJR-1 2008-12-11
91-56B Continuing Structural Integrity Program for Airplanes

Guidance material on this subject for other transports is provided in AC 91-60. The procedures set forth by this AC are applicable to the large transport category airplanes operated under Subpart D of part 91, and parts 121 and 125.

Active ANM-115 2008-03-07
33.91-1 Engine System and Component Tests

This advisory circular (AC) provides guidance and acceptable methods, but not the only methods, that may be used to demonstrate compliance with the engine component and systems test requirements under Title 14 of the Code of Federal Regulations (14 CFR), part 33, specifically § 33.91, paragraphs (a) and (b).

Active ANE-111 2010-12-09
91-82A Fatigue Management Programs for In-Service Issues

Such guidance includes AC 91?56B, Continuing Structural Integrity Program for Airplanes, AC 25.571?

Active ACE-100 2011-08-23
61-91J WINGS - Pilot Proficiency Programs

The objective of the WINGS Pilot Proficiency Program is to reduce the number of accidents in General Aviation (GA) by assisting airmen to find educational opportunities designed to help them apply the principles of risk assessment and risk management (RM).

Active AFS-800 2011-02-16
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 AC is intended for use by persons operating aircraft single pilot under Title 14 of the Code of Federal Regulations (14 CFR) parts 91 and 135, and flight schools. The FAA recommends that these guidelines become an integral part of all SOPs, Flight Operations Manuals (FOM), and formal flight training programs.

Active AFS-200 2012-07-30
91-55A Reduction of Electrical System Failures Following Aircraft Engine Starting

This AC is to warn general aviation aircraft owners/pilots and maintenance personnel of possible total electrical
system failure following aircraft engine starting.

Active AFS-300 2023-10-11
91-67A Minimum Equipment Requirements for General Aviation Operations Under 14 CFR Part 91, § 91.213

This AC describes acceptable ways in which an aircraft can be operated under Title 14 of the Code of Federal Regulations (14 CFR) part 91, 133, or 137 (including part 91 operations conducted by parts 141 and 142 certificate holders (CH)) with certain inoperative instruments and equipment items that are not essential for safe operations, in accordance with part 91, § 91.213.

Active AFS-800 2023-10-16
91-57C Exception for Limited Recreational Operations of Unmanned Aircraft

The guidance provided in this AC supports the limited recreational operation of unmanned aircraft (UA) by explaining how a recreational flyer of UA may comply with the statutory requirements of Title 49 of the United States Code (49 U.S.C.)

Active AFS-800 2022-10-20
91.21-1D Use of Portable Electronic Devices Aboard Aircraft

This AC provides aircraft owners, operators (i.e., certificate holders), and the flying public with information and guidance to comply with Title 14 of the Code of Federal Regulations (14 CFR) part 91, §91.21. Section 91.21 was established because of the potential for portable electronicdevices (PED) to interfere with aircraft navigation or communication systems, and prohibits the operation of PEDs not installed aboard U.S.

Active AFS-300 2017-10-27
120-74B Parts 91, 121, 125, and 135 Flightcrew Procedures During Taxi Operations

It is intended for use by persons operating aircraft with two or more pilots on the flight deck under Title 14 of the Code of Federal Regulations (14 CFR) parts 91, 121, 125, and 135. The FAA recommends that these guidelines become an integral part of all SOPs, flight operations manuals (FOM), and formal flightcrew member training programs.

Active AFS-200 2012-07-30
120-125 Development and Use of an Operator's MEL, NEF Program, and CDL for Operations Under 14 CFR Parts 91K, 121, 125, and 135

This AC provides clarity on minimum equipment list (MEL), nonessential equipment and furnishings (NEF) program, Configuration Deviation List (CDL), and certain Federal Aviation Administration (FAA) requirements regarding the operation of aircraft with inoperative instruments and equipment.

Active AFS-200 2023-11-01
90-114B Automatic Dependent Surveillance-Broadcast Operations with Change 1

The intent of this AC is to facilitate operations using Automatic Dependent Surveillance-Broadcast (ADS-B) technology in compliance with Title 14 of the Code of Federal Regulations (14 CFR) part 91, §§ 91.225 and 91.227. The appendices provide guidance on additional ADS-B Out and ADS-B In operations that may be authorized by the Administrator.

Active AFS-400 2019-12-30
120-27F Aircraft Weight and Balance Control

This AC provides operators with guidance on how to develop and receive approval for a Weight and Balance (W&B) control program for aircraft and operated under Title 14 of the Code of Federal Regulations (14 CFR) part 91 subpart K (part 91K) , and parts 121, 125, and 135.

Active AFS-200 2019-05-06
90-80C Approval of Offshore Standard Approach Procedures, Airborne Radar Approaches, and Helicopter En Route Descent Areas with Change 1

This AC provides operational approval information for operators conducting operations under Title 14 of the Code of Federal Regulations (14 CFR) parts 91, 91 subpart K (part 91K), and 135 to support issuance of operations specifications (OpSpec) or letters of authorization (LOA).

Active AFS-400 2017-12-21
43-211A Recommended Alternative Inspection Schedule for Daher (Socata) TBM Series Aircraft

If aircraft owners/operators and maintenance providersinspect aircraft under a progressive inspection program, this AC will help ensure they comply with Title 14 of the Code of Federal Regulations (14 CFR) part 91, § 91.409. While this AC provides one way of addressing progressive inspections of TBM Series aircraft, it may not be the only way.

Active AFS-300 2016-01-29
00-65A Towbar and Towbarless Movement of Aircraft

This AC provides guidance for towbar and towbarless movement of aircraft and applies to all operators under Title 14 of the Code of Federal Regulations (14 CFR) parts 91, 91 subpart K (part 91K), 121, 125, 129, and 135. The term “certificate holder (CH)” will be used throughout this document to represent “operators,” “air carriers,” and their agents.

Active AFS-300 2023-08-11
120-80B Firefighting of General and High-Energy In-Flight Fires

This AC is applicable to operators conducting operations under Title 14 of the Code of Federal Regulations (14 CFR) parts 91, 91 subpart K (part 91K), 121, 125, and 135. The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

Active AFS-200 2023-03-16
120-124 Continuous Airworthiness Maintenance Program (CAMP) Training Program

This AC explains the scope and detail the Federal Aviation Administration (FAA) expects of a Continuous Airworthiness Maintenance Program (CAMP) Training Program and offers a means (but not the only means) of compliance with Title 14 of the Code of Federal Regulations (14 CFR) part 91, § 91.1433; part 121, § 121.375; and part 135, § 135.433, the regulations requiring maintenance and preventive maintenance training programs.

Active AFS-300 2023-10-24
90-66C Non-Towered Airport Flight Operations

This AC is related to Title 14 of the Code of Federal Regulations (14 CFR) part 1, § 1.1 (traffic pattern), and part 91, § 91.13 (Careless or Reckless Operation), § 91.113 (Right-of-Way Rules: Except Water Operations), and § 91.126 (Operating On or In the Vicinity of an Airport in Class G Airspace).

Active AFS-800 2023-06-06
00-70 Flightcrew Member Certificate Verification Plan

This AC provides information to Title 14 of the Code of Federal Regulations (14 CFR) fractional ownership program managers operating under 14 CFR part 91 subpart K (part 91K) and 14 CFR part 119 certificate holders operating under 14 CFR parts 121 and 135, seeking approval of Operations Specification (OpSpec)/Management Specification (MSpec) A063, Flightcrew Member Certificate Verification Plan.

Active AFS-200 2018-12-19
20-109B Service Difficulty Reporting System (Air Operator/Air Agency/General Aviation/Unmanned Aircraft Systems)

This AC describes methods the Administrator prescribes per Title 14 of the Code of Federal Regulations (14 CFR) part 91, § 91.1415; part 125, § 125.409; and part 135, § 135.415; and accepts per part 121, § 121.703 and part 145, § 145.221 for reporting in-service product and article failures, malfunctions, and defects.

Active AFS-300 2023-11-01
43-9C Maintenance Records

Describes methods, procedures and practices determined to be acceptable for showing compliance with the general aviation maintenance record-making and record-keeping requirements of Title 14 of the Code of Federal Regulations (14 CFR) parts 43 and 91. This material is issued for guidance and outlines several methods of compliance with the regulations.

Active AFS-340 1998-06-08
150/5100-17 Land Acquisition and Relocation Assistance for Airport Improvement Program Assisted Projects (Consolidated through Change 7)

Provides guidance to sponsors of airport projects developed under the Airport Improvement Program (AIP) to meet the requirements of the Uniform Relocation Assistance and Real Property Acquisition Policies Act of 1970 (PL 91-646, as amended) and the Regulations of the Office of the Secretary of Transportation, 49 CFR Part 24.

Active APP-400 2017-07-10
120-68J Pilot Records Database and Pilot Records Improvement Act

In accordance with part 111, all 14 CFR part 119 certificate holders, operators that conduct operations in accordance with a fractional ownership program (fractional ownerships), and air tour operators holding a Letter of Authorization (LOA) issued in accordance with 14 CFR part 91, § 91.147 are required to access the PRD and evaluate the available data for each individual pilot candidate prior to making a hiring decision.

Active AFS-600 2021-06-28
120-73 Damage Tolerance Assessment of Repairs to Pressurized Fuselages

Provides guidance to operators of certain transport category airplanes operated under 14 CFR Parts 91, 121, 125, and 129. The guidance provides an acceptable means of compliance with the regulations that require incorporating FAA-approved “repair assessment guidelines” into an operator’s FAA-approved maintenance or inspection program.

Active ANM-100 2000-12-14
120-76D Authorization for Use of Electronic Flight Bags

It is intended for all operators conducting flight operations under Title 14 of the Code of Federal Regulations (14 CFR) part 91 subpart K (part 91K), 121, 125, or 135 who want to replace required paper information or utilize other select applications as part of EFB functionality.

Active AFS-400 2017-10-27
120-97A Incorporation of Fuel Tank System Instructions for Continued Airworthiness into Operator Maintenance or Inspection Programs (Including Change 1)

Additionally, the EAPAS/FTS rule redesignates (replaces) Title 14 of the Code of Federal Regulations (14 CFR) part 91, § 91.410(b); part 121, § 121.370(b); part 125, § 125.248(b); and part 129, § 129.32(b) of the FTS rule.

Active AFS-300 2012-05-25
68-1A BasicMed

It outlines the required medical education course, medical requirements, and aircraft and operating restrictions that pilots must meet to act as pilot in command (PIC) for most Title 14 of the Code of Federal Regulations (14 CFR) part 91 operations. This AC is intended to be used as a resource for pilots operating under BasicMed.

Active AFS-800 2017-05-03
119-2A Operational Use of Radio Frequency Identification Systems Onboard Aircraft

This AC provides aircraft operator guidance on the use of radio frequency identification (RFID) devices and systems in operational and maintenance environments as a means of identifying or scheduling specific maintenance and inspection tasks in accordance with Title 14 of the Code of Federal Regulations (14 CFR) parts 43, 91, 121, 125, 129, and 135. This AC limits its scope to aircraft RFID applications, where RFID tags are installed directly on aircraft, parts, and components to verify identification, serviceability status, or presence.

Active AFS-300 2021-08-23
20-186A Airworthiness and Operational Approval of Cockpit Voice Recorder Systems

Specifically, when followed in its entirety, it provides an acceptable means for complying with the airworthiness regulations contained in Title 14 of the Code of Federal Regulations (14 CFR) parts 23, 25, 27, 29, 91, 121, 125, 129, and 135 when installing CVR systems in airplanes and rotorcraft.

Active AFS-300 2024-05-06
150/5220-26 Airport Ground Vehicle Automatic Dependent Surveillance - Broadcast (ADS-B) Out Squitter Equipment

Using this AC, airports will be able to acquire approved and authorized airport ground vehicle ADS-B squitter units that are compliant with Title 14 Code of Federal Regulations (CFR), Part 91, ADS–B Out Performance Requirements to Support Air Traffic Control (ATC) Service.

Active AAS-100 2011-11-14
43-214A Repairs and Alterations to Composite and Bonded Aircraft Structure

This advisory circular (AC) provides information and guidance concerning an acceptable means, but not the only means, of demonstrating compliance with the requirements of Title 14 of the Code of Federal Regulations (14 CFR) parts 21, 23, 25, 26, 27, 29, 31, 33, 35, 43, 91, 121, 125, 129 (U.S.-registered airplanes), 133, 135, 137, and 145 regarding procedures and facilities for repairs and alterations of structures consisting of adhesively-bonded (including metal bond) and fiber-reinforced materials (e.g., carbon, aramid, and glass-reinforced polymeric materials mentioned in the current edition of AC 20-107, Composite Aircraft Structure).

Active AFS-300 2016-07-23