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United States Department of TransportationUnited 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
70/7460-1M Obstruction Marking and Lighting

This Advisory Circular (AC) describes the Federal Aviation Administration’s standards for marking and lighting structures to promote aviation safety.

Active AJV-P 2020-11-16
150/5210-5D Painting, Marking, and Lighting of Vehicles Used on an Airport

Provides guidance, specifications, and standards for painting, marking, and lighting of ground vehicles operating in the airport air operations area (AOA).

Active AAS-100 2010-04-01
45-2E Identification and Registration Marking

This AC describes an acceptable means, but not the only means, to comply with the requirements for identifying aircraft and aircraft engines with identification plates, identification marking requirements for propellers, and marking aircraft with nationality and registration marks.

Active AIR-100 2015-10-01
20-88A Guidelines on the Marking of Aircraft

Provides revised guidelines on the marking of aircraft powerplant instruments and electronic displays (cathode ray tubes, etc.).

Active ANM-110 1985-09-30
25.812-1A Floor Proximity Emergency Escape Path Marking

Provides guidance material for use in demonstrating compliance with the provisions of Part 25 of the FAR requiring floor proximity emergency escape path markings.

Active ANM-114 1989-05-22
43-213A Parts Marking Identification - Including Change 1

This advisory circular (AC) provides information and guidance on developing procedures for part marking and part re-marking when performing maintenance, alteration, and fabrication, including the fabrication of owner- or operator-produced parts.

Active AFS-300 2013-05-14
150/5345-53D Airport Lighting Equipment Certification Program

This AC describes the Airport Lighting Equipment Certification Program (ALECP). It provides information on how an organization can get Federal Aviation Administration (FAA) acceptance as a third-party certification body (third-party certifier) and how manufacturers may get equipment qualified under the program.

Active AAS-100 2012-09-26
150/5345-56B Specification for L-890 Airport Lighting Control and Monitoring System (ALCMS)

Specifies the minimum requirements for an Airport Lighting Control and Monitoring System (ALCMS). The ALCMS simplifies the control and monitoring of lighted visual aids and enhances airport safety.

Active AAS-100 2011-09-29
150/5345-43J Specification for Obstruction Lighting Equipment

This AC contains the FAA specification for obstruction lighting equipment.

Active AAS-100 2019-03-11
20-116 Marking Aircraft Fuel Filler Openings with Color Coded Decals

Discusses the conditions under which color coded decals may be used to comply with the requirements in FAR Parts 23, 25, 27, and 29 for marking fuel filler openings.

Active ACE-100 1982-09-17
20-56A Marking of TSO-C72b Individual Flotation Devices

Outlines acceptable methods for marking individual flotation devices which also serve as seat cushions

Active AIR-120 1975-04-01
150/5345-54B Specification for L-884, Power and Control Unit for Land and Hold Short Lighting Systems

Contains the FAA standards for power and control units for land and hold short lighting systems.

Active AAS-100 2009-09-30
25.812-2 Floor Proximity Emergency Escape Path Marking Systems Incorporating Photoluminescent Elements

Provides guidance for use in demonstrating compliance with the provisions of part 25 of the Federal Aviation Regulations (FAR) regarding floor proximity emergency escape path marking systems (FPEEPMS), which incorporate photo luminescent elements.

Active ANM-114 1997-07-24
150/5345-7F Specification for L-824 Underground Electrical Cable for Airport Lighting Circuits

This AC provides specifications for L-824 underground electrical cable for airport lighting circuits.

Active AAS-100 2013-08-19
150/5345-47C Specification for Series to Series Isolation Transformers for Airport Lighting Systems

Contains the Federal Aviation Administration (FAA) specifications for series to series isolation transformers for use in airport lighting systems.

Active AAS-100 2011-07-22
150/5345-3G Specification for L-821, Panels for the Control of Airport Lighting

Provides the specified manufacturing requirements for panels used for remote control of airport lighting and auxiliary systems.

Active AAS-100 2010-09-29
150/5345-13B Specification for L-841 Auxiliary Relay Cabinet Assembly for Pilot Control of Airport Lighting Circuits

Contains the specification requirements for a relay cabinet used to control airfield lighting circuits. The L-841 consists of an enclosure containing a direct current (DC) power supply, control circuit protection and 20 pilot relays.

Active AAS-100 2007-09-20
45-4 Identification, marking, and placarding of aircraft issued special airworthiness certificates in the light-sport category (S-LSA) and aircraft issued experimental certificates for the purpose of operating light-sport aircraft (E-LSA)

This AC describes an acceptable means, but not the only means, to comply with the requirements for identifying S-LSA and E-LSA with identification (ID) plates, displaying nationality and registration marks, and displaying placards.

Active AIR-200 2012-11-16
25-16 Electrical Fault and Fire Prevention and Protection

This advisory circular (AC) provides information on electrically caused faults, overheat, smoke, and fire in transport category airplanes. Acceptable means are provided to minimize the potential for these conditions to occur, and to minimize or contain their effects when they do occur.

Active ANM-111 1991-04-05
61-65H Certification: Pilots and Flight and Ground Instructors

This advisory circular (AC) provides guidance for pilot and instructor applicants, pilots, flight instructors, ground instructors, and examiners on the certification standards, knowledge test procedures, and other requirements in Title 14 of the Code of Federal Regulations (14 CFR) part 61.

Active AFS-800 2018-08-27
25.735-1 Brakes and Braking Systems Certification Tests and Analysis

Describes an acceptable means for obtaining FAA airworthiness approval concerning new or revised requirements for braking systems, and associated test conditions for braking systems, installed in transport category airplanes.

Active ANM-100 2002-04-10
25.775-1 Windows and Windshields

Sets forth an acceptable means, but not the only means, of demonstrating compliance with the provisions of Title 14, Code of Federal Regulations (14 CFR) part 25 pertaining to the certification requirements for windshields, windows, and mounting structure. Guidance information is provided for showing compliance with § 25.775(d), relating to structural design of windshields and windows for airplanes with pressurized cabins.

Active ANM-110 2003-01-17
150/5220-18A Buildings for Storage and Maintenance of Airport Snow and Ice Control Equipment and Materials

Provides guidance for the site selection and design of buildings used to store and maintain airport snow and ice control equipment, store approved materials, and provide personnel areas required to support the requirements under the airport operator’s winter storm management plan.

Active AAS-100 2007-09-14
120-48A Communication and Coordination Between Flightcrew Members and Flight Attendants

This AC provides updated guidance for flight and cabin crews regarding communications during emergency and unusual situations.

Active AFS-200 2020-01-27
43-214A Repairs and Alterations to Composite and Bonded Aircraft Structure

-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
150/5060-5 Airport Capacity And Delay

Explains how to compute airport capacity and aircraft delay for airport planning and design.

Active APP-400 1983-09-23
150/5360-12F Airport Signing and Graphics

This AC provides guidance on airport terminal and landside wayfinding, signing, and graphics. It focuses on four areas of the airport: roadways, parking, curbside and ground transportation, and terminal.

Active AAS-100 2013-09-26
43-6D Altitude Reporting Equipment and Transponder System Maintenance and Inspection Practices

This advisory circular (AC) provides information concerning acceptable methods of testing altimeters, static systems, altitude encoders, and air traffic control (ATC) transponder systems (ATCTS).

Active AFS-300 2017-02-15
25.783-1A Fuselage Doors and Hatches

Guidance information is provided for showing compliance with structural and functional safety standards for doors and their operating systems.

Active ANM-115 2005-04-25
25.1309-1A System Design and Analysis

Describes various acceptable means for showing compliance with the requirements of section 25.1309(b), (c), and (d) of the Federal Aviation Regulations (FAR). These means are intended to provide guidance for the experience engineering and operational judgment that must form the basis for compliance findings.

Active ANM-112 1988-06-21
25.1353-1A Electrical equipment and installations Active ANM-100 2007-10-22
20-66B Propeller Vibration and Fatigue

This evaluation uses fatigue and structural data obtained in accordance with 14 CFR part 35.

Active ANE-111 2011-03-24
120-77 Maintenance and Alteration Data

This advisory circular (AC) provides one means, but not the only means, of ensuring that the contemplated maintenance, alteration, or continue-in-service condition is in compliance with applicable regulations and existing policy.

Active AFS-300 2002-10-07
120-114 Pilot Training and Checking (14 CFR Part 121 Subparts N and O, including Appendices E and F)

This advisory circular (AC) provides information regarding pilot training and checking under Title 14 of the Code of Federal Regulations (14 CFR) part 121 subparts N and O, including part 121 appendices E and F.

Active AFS-200 2016-09-29
145-9A Guide for Developing and Evaluating Repair Station and Quality Control Manuals

This advisory circular (AC) provides informational material for all repair station certificate holders and/or applicants under Title 14 of the Code of Federal Regulations (14 CFR) part 145 to develop and evaluate a Repair Station Manual (RSM) and Quality Control Manual (QCM).

Active AFS-300 2017-10-06
120-79A Developing and Implementing an Air Carrier Continuing Analysis and Surveillance System

This advisory circular (AC) provides information for developing and implementing a Continuing Analysis and Surveillance System (CASS).

Active AFS-300 2010-09-07
25-9A Smoke Detection, Penetration, and Evacuation Tests and Related Flight Manual Emergency Procedures

Provides guidelines for the conduct of certification tests relating to smoke detection, penetration, and evacuation and to evaluate related Airplane Flight Manual (AFM) procedures.

Active ANM-111 1994-01-06
23-17C Systems and Equipment Guide for Certification of Part 23 Airplanes and Airships

This advisory circular (AC) sets forth an acceptable means of showing compliance with Title 14 Code of Federal Regulations (14 CFR), part 23, for the certification of systems and equipment in normal, utility, acrobatic, and commuter category airplanes and airships.

Active ACE-100 2011-11-17
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
120-49A Parts 121 and 135 Certification

This advisory circular (AC) provides guidance and basic information on the certification processes for a Title 14 of the Code of Federal Regulations (14 CFR) parts 121 and 135 Air Carrier or Operating Certificate.

Active AFS-200 2018-07-05
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
20-147A Turbojet, Turboprop, Turboshaft, and Turbofan Engine Induction System Icing and Ice Ingestion

This AC discusses the icing environments depicted in appendices C and O of part 25, appendix C of part 29, and appendix D of part 33.

Active ANE-100 2014-10-22
61-98D Currency Requirements and Guidance for the Flight Review and Instrument Proficiency Check

This advisory circular (AC) provides information for certificated pilots and flight instructors to use in complying with the flight review required by Title 14 of the Code of Federal Regulations (14 CFR) part 61, § 61.56 and the recent flight experience requirements of § 61.57.

Active AFS-800 2018-04-30
150/5210-23 ARFF Vehicle and High Reach Extendable Turret (HRET) Operation, Training and Qualifications

Provides FAA standards and recommendations for the training of airport firefighting and rescue personnel in the proper operation and tactical use of Aircraft Rescue and Fire Fighting (ARFF) vehicles and ARFF vehicles equipped with High Reach Extendable Turret (HRETs).

Active AAS-300 2010-09-30
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
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
150/5320-6G Airport Pavement Design and Evaluation

This AC provides guidance to the public on the design and evaluation of pavements used by aircraft at civil airports.

Active AAS-100 2021-06-07
35.37-1B Propeller Fatigue Limits and Evaluation

This advisory circular (AC) provides guidance and describes methods, but not the only methods, for demonstrating compliance with § 35.37, Propeller fatigue limits and evaluation, of Title 14 of the Code of Federal Regulations (14 CFR).

Active ANE-111 2011-03-24
150/5300-19 Airport Data and Information Program

This AC provides general guidance and information for airport owners and operators in the collection and management of data describing the physical infrastructure, characteristics, and services of their airport.

Active AAS-100 2015-09-30
25.1365-1 Electrical Appliances, Motors, and Transformers

This advisory circular (AC) provides guidance for demonstrating compliance with the transport category airplane certification requirements of § 25.1365 Electrical appliances, motors, and transformers.

Active ANM-100 2007-11-27
25.795-3 Flightdeck Protection (Smoke and Fumes)

The means of compliance described in this document provides guidance to supplement the engineering and operational judgment that must form the basis of any compliance findings relative to penetration into the flightdeck of smoke, fumes, and noxious gases generated by explosions or fires elsewhere on the airplane.

Active ANM-100 2008-10-24
00-34A Aircraft Gound Handling and Servicing

This advisory circular contains in~ormation and guidance for the servicing and ground handling of aircraft.

Active AFS-340 1974-07-29
33.78-1 Turbine Engine Power-Loss and Instability in Extreme Conditions of Rain and Hail

Provides guidance and acceptable methods, but not the only methods, that may be used to demonstrate compliance with the requirements contained under Title 14 of the Code of Federal Regulations (14 CFR), part 33, sections 33.78(a)(2) and 33.78(c).

Active ANE-110 2000-02-08
61-136B FAA Approval of Aviation Training Devices and Their Use for Training and Experience

This AC does not change regulatory requirements; therefore, the provisions of the current regulation always control. This AC applies only to the evaluation and use of BATDs and AATDs. This notice does not apply to full flight simulators (FFS) and flight training devices (FTD) that are regulated under 14 CFR part 60.

Active AFS-800 2018-09-12
33.7-1 Ratings and Operating Limitations for Turbine Engines (Sections 33.7 and 33.8)

This advisory circular (AC) provides information and guidance on turbine engine compliance under part 33 of Title 14 of the Code of Federal Regulations (14 CFR), specifically §§ 33.7, Engine ratings and operating limitations, and 33.8, Selection of engine power and thrust ratings.

Active ANE-111 2010-06-28
20-65A U.S. AIRWORTHINESS CERTIFICATES AND AUTHORIZATIONS FOR OPERATION OF DOMESTIC AND FOREIGN AIRCRAFT

Provides general information and guidance concerning issuance of airworthiness certificates for U.S. registered aircraft, and issuance of special flight authorizations for operation in the United States of foreign aircraft not having standard airworthiness certificates issued by the country of registry.

Active AIR-200 2004-07-08
20-74 Aircraft Position and Anticollision Light Measurements

Contains useful information concerning measurements for intensity, covering, and color of aircraft position and anti-collision lights.

Active AIR-120 1971-07-29
117-2 Fatigue Education and Awareness Training Program

This advisory circular (AC) presents guidelines for developing and implementing a Fatigue Education and Awareness Training Program.

Active AFS-220 2012-10-11
150/5220-20A Airport Snow and Ice Control Equipment

This advisory circular provides guidance to assist airport operators in the procurement of snow and ice control equipment for airport use.

Active AAS-100 2014-09-24
150/5345-44K Specification for Runway and Taxiway Signs

This AC contains the FAA specifications for unlighted and lighted signs to be used on taxiways and runways.

Active AAS-100 2015-10-08
21-29D Detecting and Reporting Suspected Unapproved Parts

This advisory circular (AC) provides guidance to the aviation community for detecting suspected unapproved parts (SUP) and reporting them to the Federal Aviation Administration (FAA).

Active AIR-600 2016-07-12
91-70B Oceanic and Remote Continental Airspace Operations

Our goal is to provide you with a template to guide you through planning and executing flight operations through oceanic and remote continental airspace.

Active AFS-400 2016-10-04
150/5000-17 Critical Aircraft and Regular Use Determination

This advisory circular (AC) defines the term Critical Aircraft and provides guidance on the use of Critical Aircraft in facility planning and design studies, and related FAA decision making, for federally obligated airports.

Active APP-400 2017-06-20
00-1.1B Public Aircraft Operations—Manned and Unmanned

§§ 40102(a)(41) and 40125 (the statute). Additionally, this AC contains Federal Aviation Administration (FAA) policy pertaining to civil aircraft operators that provide contract support to government entities.

Active AFS-800 2018-09-21
120-57B Surface Movement Guidance and Control System

A SMGCS plan facilitates the safe movement of aircraft and vehicles on the airport by establishing more rigorous control procedures and requiring enhanced visual aids.

Active AFS-400 2020-08-25
00-65 Towbar and Towbarless Movement of Aircraft

This advisory circular (AC) provides guidance for towbar and towbarless movement of aircraft.

Active AFS-300 2009-08-27
150/5210-13C Airport Water Rescue Plans and Equipment

Provides guidance to assist airport operators in preparing for water rescue operations.

Active AAS-300 2010-09-29
20-184 Guidance on Testing and Installation of Rechargeable Lithium Battery and Battery Systems on Aircraft

The guidance in this AC is intended for manufacturers, installers, maintenance personnel, and users of installed rechargeable lithium batteries and battery systems on aircraft.

Active AIR-133 2015-10-15
90-105A Approval Guidance for RNP Operations and Barometric Vertical Navigation in the U.S. National Airspace System and in Oceanic and Remote Continental Airspace

This advisory circular (AC) provides guidance for operators to conduct Required Navigation Performance (RNP) operations in the United States, in oceanic and remote continental airspace, and in foreign countries which adopt International Civil Aviation Organization (ICAO) standards for RNP operations.

Active AFS-400 2016-03-07
25.1435-1 Hydraulic System Certification Tests and Analysis

This advisory circular (AC) provides guidance material for use as an acceptable means, but not the only means, of demonstrating compliance with the airworthiness standards for transport category airplanes that contain hydraulic system requirements. It is not mandatory and does not constitute a regulation.

Active ANM-110 2001-05-21
65-2D Airframe and Powerplant Mechanics Certification Guide Active AFS-300 1987-01-30
25.857-1 Class B and F Cargo Compartments

This advisory circular (AC) provides guidance concerning compliance with the airworthiness standards for transport category airplanes pertaining to Class B and Class F cargo compartments.

Active ANM-112 2016-02-03
120-84 Aging Aircraft Inspections and Records Reviews

This advisory circular (AC) provides guidance pertaining to aging aircraft inspections and records reviews accomplished to satisfy the requirements of the Aging Aircraft Safety Final Rule.

Active AFS-309 2004-10-22
150/5345-12F Specification for Airport and Heliport Beacons

Contains equipment specifications for light beacons that are used to locate and identify civil airports, military airports, seaplane bases, and heliports.

Active AAS-100 2010-09-24
20-174 Development of Civil Aircraft and Systems

This includes validation of requirements and verification of the design implementation for certification and process assurance.

Active AIR-120 2011-09-30
20-161 Aircraft Onboard Weight and Balance Systems

This Advisory Circular (AC)gives manufacturers and installers an acceptable means of compliance to meet the installation, operation, and airworthiness requirements for aircraft onboard weight and balance systems (OBWBS)

Active AIR-130 2008-04-11
120-42B Extended Operations (ETOPS and Polar Operations)

States an acceptable means but not the only means for obtaining approval under FAR Section 121.161 for two-engine airplanes to operate over a route that contains a point farther than one hour flying time at the normal one-engine inoperative cruise speed (in still air) from an adequate airport.

Active AFS-220 2008-06-13
150/5210-7D Aircraft Rescue and Fire Fighting Communications

Provides guidance to assist airport operators in preparing for Aircraft Rescue and Fire Fighting (ARFF) communications.

Active AAS-300 2008-04-14
120-60B Ground Deicing and Anti-icing Program

Provides one means, but not the only means, for obtaining approval of a Ground Deicing and Anti-icing Program, and for ensuring compliance with FAR Section 121.629.

Active AFS-220 2004-12-20
20-142 Eligibility and Evaluation of U.S. Military Surplus Flight Safety Aircraft Parts, Engines, and Propellers

This advisory circular (AC) provides information and guidance for use in evaluating and determining the eligibility of U.S. military surplus flight safety critical aircraft parts (FSCAP), engines, and propellers for installation on Federal Aviation Administration (FAA) type-certificated products.

Active AFS-300 2000-02-25
21-13 Standard Airworthiness Certification of Surplus Military Aircraft and Aircraft Built from Spare and Surplus Parts Active AIR-200 1973-04-05
43.13-1B Acceptable Methods, Techniques, and Practices - Aircraft Inspection and Repair [Large AC.

This advisory circular (AC) contains methods, techniques, and practices acceptable to the Administrator for the inspection and repair of nonpressurized areas of civil aircraft, only when there are no manufacturer repair or maintenance instructions.

Active AFS-350 1998-09-08
20-131A Airworthiness Approval of Traffic Alert and Collision Avoidance Systems (TCAS II) and Mode S Transponders

Provides guidance material for the airworthiness and operational approval of Traffic Alert and Collision Avoidance Systems (TCAS II) and Mode S transponders.

Active ANM-110 1993-03-29
93-3 Lengthy Tarmac Delays and Associated Airline/Airport Contingency Plans and Related Air Traffic Control Communications

This AC describes the communication process between a pilot-in-command of a TARMAC delayed aircraft and local air traffic control (ATC). In addition, air carrier (Air Carrier Operations Center/Dispatch) communications related to TARMAC delayed aircraft with the Air Traffic Control System Command Center (ATCSCC) are addressed.

Active AJR-1 2010-03-23
20-135 Powerplant Installation and Propulsion System Component Fire Protection Test Methods, Standards and Criteria with change 1

Included in this document are methods for fire testing of materials and components used in the propulsion engines and APU installations, and in areas adjacent to designated fire zones, as well as the rationale for these methods.

Active AIR-600 1990-02-06
20-169 Guidance for Certification of Military and Special Mission Modifications and Equipment for Commercial Derivative Aircraft (CDA)

CDA are aircraft that have been modified with specialized equipment to perform military and other non-civil missions. CDA are operated-by, or under the operational control of, governmental entities.

Active AIR-100 2010-09-30
20-133 Cockpit Noise and Speech Interference Between Crewmember

Provides information about the relationship between flight crew members cockpit voice communication and cockpit noise levels. Guidance, on speech interference levels, noise measurement and measurement systems, and methods to improve cockpit communication, is provided for those manufacturers, owners or operators who believe cockpit noise may be a problem on their aircraft.

Active AIR-130 1989-03-22
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
25-13 Reduced and Derated Takeoff Thrust (Power) Procedures

It consolidates FAA guidance concerning this subject and serves as a ready reference for those involved with airplane certification and operation.

Active ANM-112 1988-05-04
20-30B Aircraft Position Light and Anticollision Light Installations

Sets forth acceptable means, but not the only means, of showing compliance with the Federal Aviation Regulations (FAR) applicable to installed position lights and anti-collision lights.

Active AIR-120 1981-07-20
25.491-1 Taxi, Takeoff and Landing Roll Design Loads

Sets forth acceptable methods of compliance with provisions of Part 25 of the FAR dealing with the certification requirements for taxi, takeoff, and landing roll design loads. Guidance information is provided for showing compliance with section 25.491 of the FAR relating to structural design for airplane operation on paved runways and taxiways normally used in commercial operations.

Active ANM-110 2000-10-20
150/5020-1 Noise Control and Compatibility Planning for Airports

Provides general guidance for noise control and compatibility planning for airports as well as specific guidance for preparation of airport noise exposure maps and airport noise compatibility programs by airport operators for submission under Title 14, Code of Federal Regulations, Part 150, and the Aviation Safety and Noise Abatement Act of 1979.

Active APP-400 1983-08-05
120-83 Flight Deck Observer Seat and Associated Equipment

Provides guidance for 14 CFR parts 121, 125, and 135 certificate holders for obtaining an FAA finding regarding the operational safety/suitability of the Flight Deck Observer Seat and Associated Equipment.

Active AFS-220 2004-06-03
120-93 Damage Tolerance Inspections for Repairs and Alterations

This AC will give guidance on developing compliance documents, schedules and plans that will assist in developing and incorporating damage tolerance inspections into maintenance programs of certain transport category airplanes with respect to repairs and alterations.

Active ANM-100 2007-11-20
25.899-1 Electrical bonding and protection against static electricity

This advisory circular (AC) provides guidance for demonstrating compliance with the transport category airplane certification requirements of § 25.899 Electrical bonding and protection against static electricity

Active ANM-100 2007-10-22
150/5210-15A Aircraft Rescue and Firefighting Station Building Design

Contains information, references and guidelines for construction of Aircraft Rescue and Fire Fighting (ARFF) station building design.

Active AAS-100 2008-09-10
150/5320-17A Airfield Pavement Surface Evaluation and Rating Manuals

Appendices A and B of this AC include the Asphalt and Concrete Airfield Pavement Surface Evaluation and Rating Manuals (PASER Manuals).

Active AAS-100 2014-09-10
150/5345-46E Specification for Runway and Taxiway Light Fixtures

Contains FAA specifications for light fixtures to be used on airport runways and taxiways. See also--

Active AAS-100 2016-03-02
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
121-24D Passenger Safety Information Briefing and Briefing Cards

This AC provides updated information regarding the items that are required or recommended content in oral passenger safety briefings and on safety information briefing cards. This AC provides specific information about air carrier operations conducted under Title 14 of the Code of Federal Regulations (14 CFR) parts 121 and 135.

Active AFS-200 2019-03-05
450.167-1 Tracking for Launch and Reentry Safety Analysis

This AC provides guidance and an acceptable means of complying with the requirement to track the flight of a launch or reentry vehicle under 14 CFR § 450.167 using onboard hardware, launch site services, or other means.

Active AST-1 2022-09-29
43.13-2B Acceptable Methods, Techniques, and Practices - Aircraft Alterations Active AFS-300 2008-03-03
20-27G Certification and Operation of Amateur-Built Aircraft

This Advisory Circular (AC) provides information about Title 14, Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Parts, § 21.191(g) for the purpose of operating amateur-built aircraft.

Active AIR-200 2009-09-30
120-106A Scope and Recommended Content for a Contractual Agreement Between an Air Carrier and a Maintenance Provider

This revision of the advisory circular (AC) introduces new rulemaking regarding aircarrier contract maintenance programs and air carrier manual content pertaining to contract maintenance requirements and contract maintenance provider (MP) responsibilities required by Title 14 of the Code of Federal Regulations (14 CFR) part 121, §§ 121.368 and 121.369(b)(10), and part 135, §§ 135.426 and 135.427(b)(10).

Active AFS-300 2016-01-04
121-31 Flight Crew Sleeping Quarters and Rest Facilities

Provides methods acceptable to the FAA Administrator for FAR Part 121 certificate holders who conduct flag and supplemental operations to obtain an FAA finding regarding the adequacy of onboard sleeping quarters for compliance with FAR Sections 121.485(a) and 121.523(b).

Active AFS-220 1994-09-30
150/5345-50B Specification for Portable Runway and Taxiway Lights

Contains the FAA standards for portable runway and taxiway lights and runway end identifier lights for temporary use to permit continued aircraft operations while all or part of a runway lighting system is inoperative.

Active AAS-100 2007-09-20
103-6 Ultralight Vehicle Operations-Airports, ATC, and Weather

Provides guidance for the operation of ultralight vehicles in the U.S. Information includes airport and flight park operations, how to work with ATC, and the availability of weather services.

Active AFS-820 1983-06-23
25.613-1 Material Strength Properties and Material Design Values

This advisory circular (AC) provides guidance for demonstrating compliance with the airworthiness standards that specify the requirements for material strength properties and material design values. This guidance is applicable to transport category airplanes for which a new, amended, or supplemental type certificate is requested.

Active ANM-115 2003-08-06
20-179 Certification Data Retention Agreements and Government Records

AC 21-48 describes an acceptable means for using electronic modeling systems in design, manufacturing, installation, and inspection processes. Although in that AC we define an “electronic modeling system” as a three-dimensional (3-D) modeling system, we encourage you to use the guidance provided because it identifies the criteria for using electronic type design data and includes requirements for how to access and present the data.

Active AIR-110 2013-06-10
23-27 Parts and Materials Substitution for Vintage Aircraft

The material in this AC is neither mandatory nor regulatory in nature and does not constitute a regulation. You may follow an alternate FAA-approved method.

Active ACE-100 2009-05-18
25-25A Performance and Handling Characteristics in Icing Conditions

This advisory circular describes an acceptable means of showing compliance with the airplane performance and handling characteristics certification requirements for flight in the icing conditions defined in Appendices C and 0 of Title 14, Code of Federal Regulations part 25.

Active ANM-110 2014-10-27
120-111 Upset Prevention and Recovery Training - with Change

This advisory circular (AC) describes the recommended training for airplane Upset Prevention and Recovery Training (UPRT). The goal of this AC is to provide recommended practices and guidance for academic and flight simulation training device (FSTD) training for pilots to prevent developing upset conditions and ensure correct recovery responses to upsets.

Active AFS-200 2015-04-14
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
120-78A Electronic Signatures, Electronic Recordkeeping, and Electronic Manuals

This advisory circular (AC), as any AC, is not mandatory and does not constitute a regulation; rather, it provides standards and guidance for electronic signatures, electronic recordkeeping, and electronic manual systems.

Active AFS-300 2016-06-22
36-4D Noise Standards: Aircraft Type and Airworthiness Certification

It provides (1) guidance to certificating authorities and applicants regarding the intended meaning and stringency of the Standards in part 36 as amended through October 4, 2017 (Amendment 36-31), and (2) the specific procedures that are deemed acceptable in demonstrating compliance with those Standards.

Active AEE-100 2017-10-12
25.571-1D Damage Tolerance and Fatigue Evaluation of Structure

This advisory circular (AC) provides guidanc~ for compliance with the provisions of Title 14, Code of Federal Regulations (14 CFR) part 25, pertaining to the requirements for damage-tolerance and fatigue evaluation oftransport category aircraft structurce, including evaluation of widespread fatigue dam, age (VlFD) and establishing a limit of validity of the engineering data that supports the structural-maintenance program (hereafter referred to as the LOV).

Active ANM-115 2011-01-13
21-50 Installation of TSOA Articles and LODA Appliances

Those seeking a design approval will be referred to as applicants.

This AC is not mandatory and is not a regulation. This AC describes an acceptable means, but not the only means, to comply with the applicable requirements.

Active AIR-110 2011-02-11
20-136B Aircraft Electrical and Electronic System Lightning Protection

This advisory circular (AC) provides you with information and guidance on how you can protect aircraft electrical and electronic systems from the effects of lightning.

Active AIR-130 2011-09-07
26-1 Part 26, Continued airworthiness and Safety Improvements

This AC provides generic guidance that is applicable to the safety initiatives in part 26 that may be issued (i.e., Enhanced Airworthiness Program for Airplane Systems, Reduction of Fuel Tank Flammability in Transport Category Airplanes, Aging Airplane Safety, and Widespread Fatigue Damage). This AC provides generic guidance on the roles and responsibilities of type certificate and supplemental type certificate holders, manufacturers, owners, and operators.

Active ANM-100 2007-12-03
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
33-8 Guidance for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts under Test and Computation

This guidance is for the comparative test and analysis method used to show compliance to the airworthiness requirements under test and computation, per § 21.303 of Title 14 of the Code of Federal Regulations(14 CFR).

Active ANE-111 2009-08-19
21-16G RTCA Document DO-160 versions D, E and F, “Environmental Conditions and Test Procedures for Airborne Equipment”

(RTCA/DO)-160 versions D, E, F, and G, Environmental Conditions and Test Procedures for Airborne Equipment, dated July 27, 1997, December 20, 2005, December 6, 2007, and December 8, 2010, respectively, as containing acceptable environmental qualifications to show compliance with certain airworthiness requirements.

Active AIR-100 2011-06-22
150/5300-16B General Guidance and Specifications for Aeronautical Surveys: Establishment of Geodetic Control and Submission to the National Geodetic Survey

It also describes how to submit the information to the National Geodetic Survey (NGS) for approval and inclusion in the National Spatial Reference System (NSRS) in support of aeronautical information surveys.

Active AAS-100 2019-07-08
20-170 Integrated Modular Avionics Development. Verification, Integration and Approval using RTCA/DO-297 and Technical Standard Order C153

We cite RTCA, Inc. document RTCA/DO-297, Integrated Modular Avionics (IMA) Development Guidance and Certification Considerations, dated November 8, 2005 and supplement it with this text.

Active AIR-120 2010-10-28
431.35-2A Reusable Launch and Reentry Vehicle System Safety Process

Provides guidance and information concerning the application of a systematic and logical system safety process and methodology for identification and control of public safety hazards associated with the operation of reusable launch vehicle and reentry vehicle systems.

Active AST-1 2005-07-20
120-109A Stall Prevention and Recovery Training with Change 1

This advisory circular (AC) provides guidance for training, testing, and checking pilots to ensure correct responses to impending and full stalls.

Active AFS-200 2015-11-24
20-153B Acceptance of Aeronautical Data Processes and Associated Databases

The term “must” indicates mandatory requirements when following the guidance in this AC. The terms “should” and “recommend” indicate recommended guidance, but are not required for meeting the objectives of this AC.

Active AIR-130 2016-04-19
150/5200-30D Airport Field Condition Assessments and Winter Operations Safety

This AC provides guidance to assist airport operators in developing a snow and ice control plan, assessing and reporting airport conditions through the utilization of the Runway Condition Assessment Matrix (RCAM), and establishing snow removal and control procedures.

Active AAS-300 2020-10-29
00-33A Nickel-Cadmium Battery Operational, Maintenance, and Overhaul Practices

This circular provides guidelines for more reliable nickel-cadmium battery operation through proper operational and maintenance practices, and has been reissued to include reconditioning information.

Active AFS-300 1973-02-14
150/5340-30J Design and Installation Details for Airport Visual Aids

This AC provides guidance and recommendations on the installation of airport visual aids.

Active AAS-100 2018-02-12
121-42 Leadership and Command Training for Pilots in Command

This AC presents guidelines for developing and implementing leadership and command training for pilots in command (PIC) and second-in-command (SIC) pilots serving in Title 14 of the Code of Federal Regulations (14 CFR) part 121 operations that require three or more pilots.

Active AFS-200 2020-03-03
120-26N Assignment of Aircraft Call Signs and Associated Telephonies

Guidance is provided to aircraft operators for requesting an aircraft call sign and explains the assignment and the authorization process for their use domestically, within the National Airspace System (NAS); and their use internationally.

Active AJR-2 2020-10-08
120-68J Pilot Records Database and Pilot Records Improvement Act

This advisory circular (AC) provides operators and pilots with guidance regarding Title 14 of the Code of Federal Regulations (14 CFR) part 111: the Pilot Records Database (PRD) and the Pilot Records Improvement Act of 1996 (PRIA).

Active AFS-600 2021-06-28
90-89C Amateur-Built Aircraft and Ultralight Flight Testing Handbook

This AC provides suggestions and safety-related recommendations primarily to assist amateur-built aircraft and ultralight vehicle builders in developing individualized flight test plans.

Active AFS-300 2023-02-14
150/5380-9 Guidelines and Procedures for Measuring Airfield Pavement Roughness

Provides guidelines and procedures for measuring and evaluating runway roughness as identified by surface profile data of rigid and flexible airport pavements.

Active AAS-100 2009-09-30
150/5220-17B Aircraft Rescue and Fire Fighting (ARFF) Training Facilities

Provides guidance on the design, construction, and operation of aircraft rescue and fire fighting (ARFF) training facilities.

Active AAS-100 2010-09-30
23-13A Fatigue, Fail-Safe, and Damage Tolerance Evaluation of Metallic Structure for Normal, Utility, Acrobatic, and Commuter Category Airplanes

Provides information and guidance concerning an acceptable means of demonstrating compliance with the requirements of Part 23 of the Federal Aviation Regulations (FAR) regarding fatigue and fail-safe evaluation of metallic airplane structure.

Active ACE-100 2005-09-29
121-25 Additional Weather Information: Domestic and Flag Air Carriers

Provides guidance and standards to domestic and flag air carriers for approval of a system for obtaining forecasts and reports of adverse weather phenomena

Active AFS-224 1977-09-16
65-15A [Large AC] Airframe and Powerplant Mechanics Airframe Handbook

Designed to familiarize student mechanics with airframe construction, repair, and the operating theory of airframe systems. SN 050-007-00391-9

Active AFS-630 1976-01-01
65-31B Training, Qualification, and Certification of Nondestructive Inspection Personnel

This advisory circular (AC) contains recommendations for the experience, training, qualification, examination, and certification of nondestructive inspection (NDI) personnel for the inspection of aircraft, engines, propellers, accessories, and other aviation components.

Active AFS-300 2014-02-24
20-24D Approval of Propulsion Fuels, Additives, and Lubricating Oils

It also provides guidance on fuel and lubricating oil specifications and standards, and on propulsion fuel and/or lubricating oil certification plans.

Active AIR-20 2014-06-30
150/5380-6C Guidelines and Procedures for Maintenance of Airport Pavements

This AC provides guidelines and procedures for maintaining airport pavements.

Active AAS-100 2014-10-10
150/5345-10H Specification for Constant Current Regulators and Regulator Monitors

Contains a specification for constant current regulators (CCR) and a monitor for use with airport lighting circuits.

Active AAS-100 2014-11-05
121-39 Air Carrier Pilot Remedial Training and Tracking Program

This advisory circular (AC) presents guidelines for developing and implementing remedial training and tracking of pilots.

Active AFS-200 2014-12-30
141-1B Part 141 Pilot Schools, Application, Certification, and Compliance

Unlike pilot training conducted under 14 CFR part 61, part 141 pilot schools are required to use a structured training program and syllabus. Part 141 pilot schools may be able to provide a greater variety of training aids and require dedicated training facilities, flight instructor oversight, and FAA-approved course curricula.

Active AFS-800 2017-09-12
00-74 Avionics Human Factors Considerations for Design and Evaluation

This advisory circular (AC) identifies two reports that provide information in the form of “recommended practices” to increase awareness of human factors and facilitate the identification and resolution of human factors/pilot interface issues during the design and evaluation of avionics.

Active AIR-600 2019-05-01
150/5230-4C Aircraft Fuel Storage, Handling, and Dispensing on Airports

This AC contains specifications and guidance for the storage, handling, and dispensing of aviation fuel on airports.

Active AAS-300 2021-09-23
147-3C Certification and Operation of Aviation Maintenance Technician Schools

Conformity with the guidance is voluntary only and nonconformity will not affect rights and obligations under existing statutes and regulations.

Active AFS-300 2022-03-22
25.785-1B Flight Attendant Seat and Torso Restraint System Installations

This advisory circular

CAe) provides information and guidance regarding an acceptable means, but not the only means, of compliance with th~ portions of 14 Code of Federal Regulations (CFR) 25.785 and 14 CFR 121.311, which deal with flight attendant seats.

Active ANM-100 2010-05-11
150/5210-14B Aircraft Rescue Fire Fighting Equipment, Tools and Clothing

Contains references to the minimum requirements for the selection and performance of aircraft rescue and firefighting personal protective equipment (PPE), self contained breathing apparatus (SCBA), and powered rescue tools.

Active AAS-300 2008-09-30
20-113 Pilot Precautions and Procedures to be taken in Preventing Aircraft Reciprocating Engine Induction System and Fuel System Icing Problems

Provides information pertaining to aircraft engine induction system icing and the use of fuel additives to reduce the hazards of aircraft operation that may result from the presence of water and ice in aviation gasoline and aircraft fuel systems.

Active ACE-100 1981-10-22
150/5200-38 Protocol for the Conduct and Review of Wildlife Hazard Site Visits, Wildlife Hazard Assessments, and Wildlife Hazard Management Plans

For certificated airports, this Advisory Circular (AC) defines the minimum acceptable standards for the conduct and preparation of Wildlife Hazard Site Visits (Site Visit), Wildlife Hazard Assessments (Assessments) and Wildlife Hazard Management Plans (Plans).

Active AAS-300 2018-08-20
20-146A Methodology for Dynamic Seat Certification by Analysis for Use in Parts 23, 25, 27, and 29 Airplanes and Rotorcraft

This advisory circular (AC) sets forth an acceptable means, but not the only means, for demonstrating compliance with title 14 of the Code of Federal Regulations (14 CFR)
§§ 23.562, 25.562, 27.562, and 29.562, as well as Technical Standard Order (TSO) TSO-C127a, and TSO-C127b.

Active AIR-600 2018-06-29
150/5300-18B General Guidance and Specifications for Submission of Aeronautical Surveys to NGS: Field Data Collection and Geographic Information System (GIS) Standards

Please see the letter cancelling AC 150/5300-18C and re-activating AC 150/5300-18B.

Active AAS-100 2009-05-21
20-122A Anti-misfueling Devices: Their Availability and Use - Change 1

It also makes recommendations to the fuel suppliers and Fixed Base Operators to change their fuel dispensing nozzles to meet the dimensions referenced in the SAE standard.

Active AFS-340 1991-01-29
25.1302-1 Installed Systems and Equipment for Use by the Flightcrew

The guidance provided by this AC is intended to minimize the occurrence of design-related errors by the flightcrew and to enable the flightcrew to detect and manage errors that do occur.

Active ANM-111 2013-05-03
20-172B Airworthiness Approval for ADS-B In Systems and Applications

This advisory circular (AC) provides guidance for the initial and follow-on installations of Automatic Dependent Surveillance – Broadcast (ADS-B) In systems supporting ground and airborne traffic applications.

Active AIR-130 2015-05-20
150/5210-17C Programs for Training of Aircraft Rescue and Firefighting Personnel

This AC provides information on courses and reference materials for training of Aircraft Rescue and Firefighting (ARFF) personnel.

Active AAS-300 2015-06-12
20-18B Qualification Testing of Turbojet and Turbofan Engine Thrust Reversers

It does not address aircraft-level effects of the installation and use of a thrust reverser.

Active ANE-111 2015-07-07
20-164A Designing and Demonstrating Aircraft Tolerance to Portable Electronic Devices

This advisory circular (AC) identifies RTCA, Inc., document DO-307A, Aircraft Design and Certification for Portable Electronic Device (PED) Tolerance, dated December 15, 2016, as an acceptable means for designing and demonstrating aircraft toleranceto potential electromagnetic interference from portable electronic devices (PEDs).

Active AIR-100 2017-06-09
450.173-1 Part 450 Mishap Plan – Reporting, Response, and Investigation Requirements

This AC does not constitute a regulation and does not contain requirements, but is intended to assist applicants in obtaining commercial space authorizations and operating in compliance with commercial space regulations.

Active AST-1 2021-08-12
150/5345-39E Specification for L-853, Runway and Taxiway Retroreflective Markers

This AC contains the FAA's standards for retroreflective markers for airport runways and taxiways.

Effective six months after the issue date of this AC, only equipment that is qualified with in this AC will be listed according to the requirements in AC 150/5345-53, Airport Lighting Equipment Certification Program.

Active AAS-100 2021-10-12
120-80B Firefighting of General and High-Energy In-Flight Fires

The information includes recommended crewmember procedures and training for combating general and high-energy fires (HEF) caused by lithium batteries.

Active AFS-200 2023-03-16
43-11 Reciprocating Engine Overhaul Terminology and Standards - Including Change 1

Review Title 14 of the Code of Federal Regulations (14 CFR) regarding engine records and standards.

Active AFS-340 1976-04-07
120-55C Air Carrier Operational Approval and Use of TCAS II

This advisory circular (AC) provides an acceptable, but not the only, means to address Traffic Alert and Collision Avoidance System (TCAS) issues related to installation and use of TCAS II regarding compliance with Title 14 of the Code of Federal Regulations (14 CFR) parts 121, 125, and 129 requirements for air carriers.

Active AFS-400 2011-02-23
23.1309-1E System Safety Analysis and Assessment for Part 23 Airplanes

It is issued for guidance purposes and to outline a method of compliance with the rules.

Active ACE-100 2011-11-17
20-97B Aircraft Tire Maintenance and Operational Practices with Change 1

This AC is not mandatory and does not constitute a regulation. It is issued for guidance purposes and to outline acceptable tire maintenance and operational practices.

Active AFS-300 2005-04-18
20-105B Reciprocating Engine Power-Loss Accident Prevention and Trend Monitoring

Updates statistical information and brings to the attention of aircraft owners, operators, manufacturers, and maintenance personnel the circumstances surrounding engine power-loss accidents with recommendations on how those accidents can be prevented.

Active AFS-340 1998-06-15
00-59 Integrating Helicopter and Tiltrotor Assets into Disaster Relief Planning

Provides guidance to state and local emergency relief planners on integrating helicopters and tiltrotor aircraft into disaster relief planning efforts.

Active AND-710 1998-11-13
25.905-1 Minimizing the Hazards from Propeller Blade and Hub Failures

Describes an acceptable means for showing compliance with the requirements of Section 25.905, “Propellers,” of Title 14, Code of Federal Regulations (CFR) Part 25.

Active ANM-110 2000-09-27
36-1H Noise Levels for U.S. Certificated and Foreign Aircraft

Provides noise level data for airplanes certificated under FAR Part 36. Noise level data for foreign airplanes certificated to ICAO Annex 16 standards are also provided in a separate appendix for informational purposes.

Active AEE-100 2001-11-15
120-110 Aircraft Secondary Barriers and Alternate Flight Deck Security Procedures

This AC is not mandatory and does not constitute a regulation. It describes an acceptable means, but not the only means, to comply with pertinent regulatory requirements.

Active AFS-200 2015-04-14
61-67C Stall and Spin Awareness Training with Change 1 & 2

This advisory circular (AC) explains the stall and spin awareness training required under Title 14 of the Code of Federal Regulations (14 CFR) part 61 and offers guidance to flight instructors who provide that training.

Active AFS-840 2000-09-25
170-6C Use of Radionavigation Land Test Station and Signal Generators

Gives information as to the frequencies on which the FAA will authorize and the FCC will license radionavigation land test stations.

Active ASM-500 1981-02-13
20-151C Airworthiness Approval of Traffic Alert and Collision Avoidance Systems (TCAS II), Versions 7.0 & 7.1 and Associated Mode S Transponders

You can also use the guidance in this AC for seeking airworthiness approval for TCAS II version 7.0 (V7.0) certified to TSO-C119b, Traffic Alert and Collision Avoidance System (TCAS) Airborne Equipment, TCAS II and associated Mode S transponders.

Active AIR-100 2017-07-21
150/5320-12C Measurement, Construction, and Maintenance of Skid Resistant Airport Pavement Surfaces

Contains guidelines and procedures for the design and construction of skid-resistant pavement; pavement evaluation, without or with friction equipment; and maintenance of high skid-resistant pavements.

Active AAS-100 1997-03-18
43-206 Inspection, Prevention, Control, and Repair of Corrosion on Avionics Equipment

AC contains acceptable methods, techniques, and practices for inspection, prevention, control and repair of corrosion on avionic systems and equipment.

Active AFS-300 2001-05-30
135-42 Extended Operations (ETOPS) and Operations in the North Polar Area

This advisory circular (AC) provides certificate holders with guidance for obtaining operational approval to conduct Extended Operations (ETOPS) under Title 14 of the Code of Federal Regulations (14 CFR) part 135.

Active AFS-220 2008-06-10
150/5000-15B Announcement of Availability of Airport-Related Research and Development Products

This AC explains how to obtain the latest airport-related research and development (R&D) products funded by the Federal Aviation Administration’s (FAA’s) Airports Organization, particularly the FAA’s Airport Technology Research and Development Branch, the Airport Cooperative Research Program (ACRP), the Innovative Pavement Research Foundation (IPRF), and the Airfield Asphalt Pavement Technology Program (AAPTP).

Active AAS-100 2013-07-23
20-138D Airworthiness Approval of Positioning and Navigation Systems (Including Change 2)

This revision adds minor clarifications and new guidance material based on issues and questions since revision ‘C’ was published.

Active AIR-130 2014-03-28
90-112A Development and Submission of Special Instrument Procedures to the FAA

This Advisory Circular (AC) provides guidance for the submission and approval of special instrument flight procedures developed by non-FAA service providers and submitted to the Federal Aviation Administration (FAA) for review and approval.

Active AFS-400 2015-04-14
119-1 Airworthiness and Operational Approval of Aircraft Network Security Program (ANSP)

This advisory circular (AC) describes an acceptable means, but not the only means, of obtaining operational authorization for an aircraft certified with a special condition (SC) related to security of the onboard computer network. This AC is not mandatory and does not constitute a regulation. However, if you use the means described in the AC, you must conform to it in totality.

Active AFS-300 2015-09-30
450.3-1 Definition of Launch and Scope of a Vehicle Operator License

This Advisory Circular (AC) provides guidance on the Federal Aviation Administration’s (FAA) definition of “launch” in § 401.7, and the determination of the beginning of a launch at a United States (U.S.) launch site, per § 450.3(b)(1) and (d).

Active AST-1 2022-09-29
20-141B Airworthiness and Operational Approval of Digital Flight Data Recorder Systems

This advisory circular (AC) provides information on certification (design and installation) and continued airworthiness of digital flight data recorder systems (DFDRS).

Active AIR-130 2010-08-17
150/5220-10E Guide Specification for Aircraft Rescue and Fire Fighting (ARFF) Vehicles

Provides an interactive specification that airports can use in procuring Aircraft Rescue and Fire Fighting (ARFF) vehicles. It describes the selection process, vehicle requirements, and how to produce formal specifications.

Active AAS-100 2011-06-01
121-28 Preparation and Loading of Magnetron Magnetic Materials for Air Transportation

Provides information relevant to the preparation and loading of magnetic materials for shipment in civil aircraft

Active ACS-120 1987-03-19
43-2B Minimum Barometry for Calibration and Test of Atmospheric Pressure Instruments

Provides guidance material which may be used to determine the adequacy of barometers used in the calibration of aircraft static instruments and presents information concerning the general operation, calibration, and maintenance of such barometers.

Active AFS-343 1980-10-16
00-60B North American Free Trade Agreement and Specialty Air Services Operations

NAFTA opens up cross-border trade in Specialty Air Services (SAS) and was ratified by the United States of America, the United Mexican States, and Canada.

Active AFS-800 2014-02-12
150/5100-14E Architectural, Engineering, and Planning Consultant Services for Airport Grant Projects

This AC provides guidance for airport sponsors in the selection and engagement of architectural, engineering, and planning consultants.

Active AAS-100 2014-09-30
150/5345-26E FAA Specification for L-823 Plug and Receptacle, Cable Connectors

This AC contains the specification for plug and receptacle (cable connectors) used with underground power cables, isolation transformer leads, and light fixture leads for airport lighting systems.

Active AAS-100 2021-12-16
23-16A Powerplant Guide for Certification of Part 23 Airplanes and Airships

This advisory circular (AC) provides information and guidance about acceptable means, but not the only means of compliance with Title 14 of the Code of Federal Regulations (14 CFR) part 23, subpart E, applicable to the powerplant installation in normal, utility, acrobatic, and commuter category airplanes.

Active ACE-100 2004-02-23
21-51 Applicant’s Showing of Compliance and Certifying Statement of Compliance

We, the Federal Aviation Administration (FAA), wrote this advisory circular (AC) to describe how to comply with the requirements of Title 14 of the Code of Federal Regulations (14 CFR) 21.20, 21.97 and 21.303(a)(5).
This AC is not mandatory and is not a regulation.

Active AIR-110 2011-09-27
33.83-1 Comparative Method to Show Equivalent Vibratory Stresses and High Cycle Fatigue Capability for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts

PMA applicants may use this comparative modal and high-cycle fatigue (HCF) method to show the vibratory stresses and HCF capability of their proposed blades or vanes are equivalent to those of the type design parts.

Active ANE-111 2009-09-08
136-1 Commercial Air Tour Operations Conducted Over National Parks and Tribal Lands

This Advisory Circular (AC) contains information, directions, and procedures for obtaining operating authority for commercial air tour operations over national parks and tribal lands.

Active AFS-200 2002-10-25
43-207 Correlation, Operation, Design, and Modification of Turbofan/Jet Engine Test Cells

Provides guidance regarding test cell correlation procedures for test cells used for in-service acceptance testing of turbofan and turbojet engines. This AC discusses the effects of the design, operation, and modification of a test cell and engine test hardware on engine performance.

Active AFS-100 2002-12-26
34-1B Fuel Venting and Exhaust Emission Requirements for Turbine Engine Powered Airplanes

The Intent of this AC is to promote uniformity of implementation of the emissions certification requirement of Part 34 of the Federal aviation Regulations.

Active AEE-300 2003-06-27
120-74B Parts 91, 121, 125, and 135 Flightcrew Procedures During Taxi Operations

SOPs may vary among fleets and among certificate holders and may change over time.

Active AFS-200 2012-07-30
21.303-4 Application for Parts Manufacturer Approval Via Tests and Computations or Identicality

For example, AC 33-8 has guidance for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts under Test and Computation.

Active AIR-110 2014-03-21
20-162B Airworthiness Approval of Installed Radio Frequency Identification (RFID) Tags and Sensors

This advisory circular (AC) provides certification applicants with airworthiness guidance for installing passive, battery-assisted passive (BAP), and active radio frequency identification (RFID) tags and sensors on aviation products and equipment.

Active AIR-600 2018-10-11
21-32B Control of Products and Parts Shipped Prior to Type Certificate Issuance

Is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to comply with these requirements.

Active AIR-200 2010-08-31
120-104 Establishing and Implementing Limit of Validity to Prevent Widespread Fatigue Damage

This advisory circular (AC)offers guidance on compliance with Title 14 Code of Federal Regulations (14 CFR) 26.21, 26.23, 121.1115, and 129.115. It tells design approval holders of transport category airplanes how to establish a limit of validity of the engineering data that supports the structural maintenance program (hereafter referred to as LOV) for those airplanes.

Active ANM-100 2011-01-10
20-157 How to Prepare Reliability Assessment Plans for Aircraft Systems and Equipment

This AC shows you how to develop and use a reliability assessment plan. An assessment plan documents the controlled, repeatable processes for assessing the reliability of aircraft and engine electronic and electrical systems, including their electromechanical elements and equipment.

Active AIR-120 2007-01-19
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
60-6B Airplane Flight manuals (AFM), Approved Manual Materials, Markings, and Placards Airplanes

Calls attention to the regulatory requirements relating to the subject and provides information to aid pilots to comply with these requirements.

Active AFS-820 1980-09-25
145-4A Inspection, Retread, Repair, and Alterations of Aircraft Tires - Including Change 2

Provides guidance for the development, qualification, and approval of aircraft tire repair and retread process specifications, and the use of special nondestructive inspection (NDI) techniques.

Active AFS-309 2006-07-10
21-52 Obtaining Foreign Design Approval / Acceptance of U.S. Products and Articles

This AC is not mandatory and does not constitute a regulation, however if an aviation safety agreement exists for the country or jurisdiction of interest, you must adhere to the agreement.

Active AIR-40 2013-03-07
120-71B Standard Operating Procedures and Pilot Monitoring Duties for Flight Deck Crewmembers

This AC also provides guidance on the definition and the training of PM duties and their integration into SOPs.

Active AFS-200 2017-01-10
65-33A Development of Training/Qualification and Certification Programs for Composite Maintenance Technicians

This AC contains recommendations for the experience, training, qualification, and examination of persons performing maintenance and repair of aircraft composite structures or other aviation composite components.

Active AFS-300 2017-06-27
121-40 14 CFR Part 121 and Part 135 Dangerous Goods Transportation Operations

Developing and using the comprehensive guidance in this document will promote the establishment of a safe and efficient dangerous goods operation.

Active AXH-1 2017-12-13
150/5345-42J Specification for Airport Light Bases, Transformer Housings, Junction Boxes, and Accessories

This AC provides standards for critical dimensions and performance requirements.

Active AAS-100 2019-09-12
23-10 Auxiliary Fuel Systems for Reciprocating and Turbine Powered Part 23 Airplanes Active ACE-111 1991-08-05
91-59A Inspection and Care of General Aviation Aircraft Exhaust Systems - Change 1

Further, it provides information on the types of problems to expect and recommends that pilots perform ongoing preventive maintenance and that mechanics perform maintenance.

Active AFS-300 2007-07-23
33.27-1A Engine and Turbosupercharger Rotor Overspeed Requirements of 14 CFR § 33.27.

This advisory circular (AC) provides guidance and acceptable methods, but not the only methods, for demonstrating compliance with the rotor strength (overspeed) requirements of Title 14 of the Code of Federal Regulations (14 CFR) 33.27.

Active ANE-111 2011-07-18
20-143 Installation, Inspection, and Maintenance of Controls for General Aviation Reciprocating Aircraft Engines

Provides guidance regarding the inspection, maintenance, and installation of engine controls with emphasis on the airframe portion of these systems.

Active ACE-100 2000-06-06
23.562-1 Dynamic Testing of Part 23 Airplane Seat/Restraint Systems and Occupant Protection

Provides information and guidance regarding compliance with Part 23 of the Federal Aviation Regulations (FAR) applicable to dynamic testing of airplane seats.

Active ACE-111 1989-06-22
120-41 Criteria for Operational Approval of Airborne Wind Shear Alerting and Flight Guidance

Establishes an acceptable means, but not the only means, of obtaining operational approval of an airborne wind shear alerting and flight guidance system. It describes acceptable simulation test criteria, wind field modeling data, and minimum performance parameters for evaluating candidate systems.

Active AFS-400 1983-11-07
91-73B Parts 91 and 135 Single Pilot, Flight School Procedures During Taxi Operations

In accordance with the current edition of Federal Aviation Administration (FAA) Order 7050.1, Runway Safety Program, the definition of a runway incursion is, any occurrence at an aerodrome involving the incorrect presence of an aircraft, vehicle, or person on the protected area of a surface designated for the landing and takeoff of aircraft. 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.

Active AFS-200 2012-07-30
150/5100-20 Guidance on the Extraction of Oil and Gas on Federally Obligated Airports

The AC was produced as a joint effort by the FAA’s Offices of Airport Planning and Programming, Airport Safety and Standards, and Airport Compliance and Management Analysis.

Active APP-400 2016-03-23
21-43A Production Under 14 CFR Part 21,Subparts F, G, K, and O

This advisory circular (AC) provides information for production approval holders (PAH) pursuant to Title 14 of the Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Articles. This AC provides PAHs and applicants for a production approval with guidance for developing and maintaining a production system that is appropriate to the PAH’s operations and complies with the regulations.

Active AIR-110 2015-10-01
20-115D Airborne Software Development Assurance Using EUROCAE ED-12( ) and RTCA DO-178( )

This AC recognizes the following current EUROCAE and RTCA, Inc. documents: (1) EUROCAE ED-12C, Software Considerations in Airborne Systems and Equipment Certification, dated January 2012, and RTCA DO-178C, Software Considerations in Airborne Systems and Equipment Certification, dated December 13, 2011. (2) EUROCAE ED-215, Software Tool Qualification Considerations, dated January 2012, and RTCA DO-330, Software Tool Qualification Considerations, dated December 13, 2011. (3) EUROCAE ED-218, Model-Based Development and Verification Supplement to ED-12C and ED-109A, dated January 2012, and RTCA DO-331, Model-Based Development and Verification Supplement to DO-178C and DO-278A, dated December 13, 2011. (4) EUROCAE ED-217, Object-Oriented Technology and Related Techniques Supplement to ED-12C and ED-109A, dated January 2012, and RTCA DO-332, Object-Oriented Technology and Related Techniques Supplement to DO-178C and DO-278A, dated December 13, 2011. (5) EUROCAE ED-216, Formal Methods Supplement to ED-12C and ED-109A, dated January 2012 and RTCA DO-333, Formal Methods Supplement to DO-178C and DO-278A, dated December 13, 2011.

Active AIR-134 2017-07-21
61-141 Flight Instructors as Certifying Officials for Student Pilot and Remote Pilot Applicants

This AC applies to submissions of either an Integrated Airman Certification and Rating Application (IACRA) or a paper application.

Active AFS-800 2018-06-25
121-22C Maintenance Review Boards, Maintenance Type Boards, and OEM/TCH Recommended Maintenance Procedures

This advisory circular (AC) provides guidelines that industry may use to develop and revise the minimum scheduled tasking/interval requirements for derivative or newly type-certificated (TC) aircraft and powerplants for Federal Aviation Administration (FAA) approval.

Active AFS-300 2012-08-27
150/5300-15A Use Of Value Engineering For Engineering And Design Of Airport Grant Projects

Provides guidance on using value engineering (VE) in airport projects funded under the Federal Aviation Administration's (FAA's) Airport Grant program.

Active AAS-100 2008-09-30
90-67B Light Signals from the Control Tower for Ground Vehicles, Equipment, and Personnel

Provides the aviation community with the meaning of the light signals used when communicating with ground vehicles, equipment, and personnel on the airport movement area from the control tower.

Active ATP-129 1994-08-25
23-20 Acceptance Guidance on Material Procurement and Process Specifications for Polymer Matrix Composite Systems

It is applicable to the material and process specifications, or other documents, used to ensure sufficient control of composite prepreg materials in normal, utility, acrobatic, and commuter category airplanes.

Active ACE-100 2003-09-19
120-28D Criteria for Approval of Category III Weather Minima for Takeoff, Landing, and Rollout

States an acceptable means, not the only means, for obtaining approval of Category III Landing Weather Minima and low visibility takeoff, including the installation and approval of associated aircraft systems.

Active AFS-400 1999-07-13
120-29A Criteria for Approval of Category I and Category II Weather Minima for Approach

This AC provides an acceptable means, but not the only means, for obtaining and maintaining approval of CAT I & II Weather Minima including the installation and approval of associated aircraft systems.

Active AFS-400 2002-08-12
33-6 Weld Repair of Aluminum Crankcases and Cylinders of Piston Engines - Including Change 1

This advisory circular also includes information on critical areas of welding, qualifications of welder's, inspection techniques, the thermal processes, and technical data required. This advisory circular references industry and military specifications which are acceptable for use by repair stations as approved data.

Active ANE-110 1994-12-20
120-53B Guidance for Conducting and Use of Flight Standardization Board Evaluations - With Change 1

It provides a means but not the only means of evaluating manufactured or modified aircraft by the use of standard systems, processes, and tests necessary to determine pilot training and qualification requirements.

Active AFS-100 2013-11-05
00-63A Use of Cockpit Displays of Digital Weather and Aeronautical Information - Including Change 1

FIS is a service that provides Meteorological Information (METI) and Aeronautical Information (AI) to enhance pilot awareness of weather and/or airspace constraints while providing information for decision support tools and improving safety.

Active AFS-400 2014-04-07
00-66 Selection of Cyclic Redundancy Code and Checksum Algorithms to Ensure Critical Data Integrity

This report is provided for information only and, as such, is not intended as guidance but rather as reference material for the aviation industry.

Active AIR-130 2015-08-04
120-118 Criteria for Approval/Authorization of all Weather Operations for Takeoff, Landing, and Rollout

This advisory circular (AC) provides an acceptable means, but not the only means, for obtaining and maintaining authorization of operations in Category (CAT) I, CAT II, and CAT III landing weather minima and instrument flight rules (IFR) lower-than-standard takeoff minima.

Active AFS-400 2018-07-02
20-117 Hazards Following Ground Deicing and Ground Operations in Conditions Conducive to Aircraft Icing

Provides information on the identified hazards associated with ground deicing and ground operations in conditions conducive to aircraft icing.

Active AFS-200 1982-12-03
23-18 Installation of Terrain Awareness and Warning System (TAWS) Approved for Part 23 Airplanes

Establishes an acceptable means, but not the only means, of obtaining FAA airworthiness approval for the installation of a TAWS that has been approved under Technical Standard Order (TSO)-C151A, Terrain Awareness and Warning System, in a Part 23 airplane. The FAA’s TSO process is a means for obtaining FAA design and performance approval for an appliance, system, or product; however, the TSO does not provide installation approval.

Active ACE-100 2000-06-14
60-11C Test Aids and Materials that may be used by Airman Knowledge Testing Applicants

Provides information concerning test aids and materials that may be used by applicants taking airman knowledge tests.

Active AFS-630 1999-04-26
25-20 Pressurization, Ventilation and Oxygen Systems Assessment for Subsonic Flight including High Altitude Operation

Provides guidance on methods of compliance with the requirements of part 25 of the Federal Aviation Regulations pertaining to pressurization, ventilation, and oxygen systems, especially as they pertain to high altitude subsonic flight.

Active ANM-111 1996-09-10
20-176A Service Bulletins Related to Airworthiness Directives and Indicating FAA Approval on Service Documents

This advisory circular (AC) presents best practices for drafting service bulletins (SB) related to an airworthiness directive (AD). This AC also provides information and guidance on ex parté communication and alternative methods of compliance (AMOC), as well as means for avoiding overlapping and conflicting actions in SBs and maintaining airworthiness of AD-mandated design changes.

Active AIR-140 2014-06-16
45-3A Installation, Removal or Change of Identification Data and Identification Plates on Aircraft Engines

This advisory circular (AC) provides information about Title 14, Code of Federal Regulations (14 CFR) part 45, Identification and Registration Marking. This AC is not mandatory and does not constitute a regulation.

Active AIR-200 2010-08-03
20-171 Alternatives to RTCA/DO-178B for Software in Airborne Systems and Equipment

RTCA/DO-178B is recognized by industry and certification authorities as an accepted approach for assuring that software in airborne systems and equipment has been developed to meet the safety objectives of the regulations.

Active AIR-120 2011-01-19
90-100A U.S Terminal and En Route Area Navigation (RNAV) Operations with Change 2

Area Navigation (RNAV) routes, Instrument Departure Procedures (DPs), and Standard Terminal Arrivals (STARs). Operators and pilots should use the guidance in this AC to determine their eligibility for these U.S.

Active AFS-400 2007-03-01
90-96A Approval of U.S. Operators and Aircraft to Operate Under Instrument Flight Rules (IFR) in European Airspace Designated for Basic Area Navigation (B-RNAV) and Precision Area Navigation (P-RNAV)

Provides guidance regarding on-board Area Navigation (BRNAV) equipment requirements for operators of U.S. registered civil aircraft, operating in a Basic Area Navigation (BRNAV) environment in the European region.

Active AFS-400 2005-01-13
90-108 Use of suitable Area navigation (RNAV) system on Conventional Routes and Procedures - Change 1

This advisory circular (AC) provides operational and airworthiness guidance regrading the suitablity and use of RNAV systems while operating on or transitioning to, conventional i.e. non-RNAV, routes and procedures within the United States (US) National Airspace System (NAS).

Active AFS-400 2011-03-03
20-154 Guide for Developing a Receiving Inspection System for Aircraft Parts and Material - Change 1

Like all AC material, this AC is not mandatory and does not constitute a regulation. It is issued for guidance and to outline a method of compliance with the rules.

Active AFS-300 2005-12-12
39-8 Continued Airworthiness Assessments of Powerplant and Auxiliary Power Unit Installations of Transport Category Airplanes

Describes the Continued Airworthiness Assessment Methodologies (CAAM). The Federal Aviation Administration (FAA) Engine and Propeller Directorate (EPD) and the Transport Airplane Directorate (TAD) may use CAAM to identify unsafe conditions and determine when an “unsafe condition is likely to exist or develop in other products of the same type design” before prescribing corrective action in accordance with Title 14 of the Code of Federal Regulations (14 CFR) part 39.

Active AIR-100 2003-09-08
25.851-1 Built-in Fire Extinguishing/Suppression Systems in Class C and Class F Cargo Compartments

This advisory circular (AC) provides guidance concerning compliance with the airworthiness standards for transport category airplanes pertaining to Class C and Class F cargo compartments that incorporate built-in fire extinguishing/suppression systems.

Active ANM-112 2016-02-03
120-117 Voluntary Disclosure Reporting Program for Apparent Violations of the Drug and Alcohol Testing Regulations

This AC provides the information and guidance material an employer or contractor needs in order to voluntarily disclose an apparent violation ofthe drug and alcohol testing regulations listed in paragraph 3 ofthis AC.

Active AAM-800 2017-12-20
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
21-28 Airworthiness Certification of U.S.-Produced Aircraft and Engine Kits Assembled Outside the United States

Provides information and guidance concerning airworthiness certification requirements for aircraft or aircraft engines, assembled from kits by aircraft or aircraft engine manufacturers located in other countries.

Active AIR-220 1990-06-20
23.1521-2 Type Certification of Oxygenates and Oxygenated Gasoline Fuels in Part 23 Airplanes with Reciprocating Engines

Provides information and guidance concerning an acceptable means of compliance with Part 3 of the Civil Air Regulations (CAR) and Part 23 of the Federal Aviation Regulations (FAR), applicable to approval procedures for certification of alternate fuels.

Active ACE-100 1996-04-24
437.73-1 Anomaly Reporting and Corrective Action for a Reusable Suborbital Rocket Operating Under an Experimental Permit

Provide guidance for reporting anomalie occurring in reusable suborbital rockets operating under an expermentalpermit issued by the Federal Aviation Administration (FAA) This AC also provide guidance for implementing an anomaly reporting and corrective action system for reusable suborbital rockets operating under FAA-issued experimental permit.

Active AST-1 2007-04-20
25.562-1B Dynamic Evaluation of Seat Restraint Systems and Occupant Protection on Transport Airplanes / with Change 1

The AC provides background and discussion of the reasoning behind the test procedures.

Active ANM-110 2006-01-10
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
21-23B Airworthiness Certification of Civil Aircraft, Engine, Propellers, and Related Products Imported to the United States

Provides information on the Federal Aviation Administration’s (FAA) objectives, regulations, and general practices for the United States of America airworthiness certification or acceptance of civil aeronautical products imported to the U.S.

Active AIR-40 2004-11-17
33.28-1 Compliance Criteria for 14 CFR §33.28, Aircraft Engines, Electrical and Electronic Engine Control Systems

This advisory circular (AC) provides guidance and acceptable methods, but not the only methods, that may be used to demonstrate compliance with 14 CFR 33.28, Electrical and Electronic Engine Control Systems.

Active ANE-110 2001-06-29
33.28-2 Guidance Material for 14 CFR 33.28, Reciprocating Engine, Electrical and Electronic Engine Control Systems

Provides guidance and acceptable methods, but not the only methods, that may be used by designers of reciprocating engine electronic control systems to demonstrate compliance with §33.28 of Title 14 of the Code of Federal Regulations (14 CFR 33.28), Electrical and electronic engine control systems.

Active ANE-110 2003-08-13
90-80C Approval of Offshore Standard Approach Procedures, Airborne Radar Approaches, and Helicopter En Route Descent Areas

This AC provides criteria and describes acceptable methods for obtaining approval to use Offshore Standard Approach Procedures (OSAP), Airborne Radar Approaches (ARA), and Helicopter En Route Descent Areas (HEDA) to descend in uncontrolled airspace to an altitude where the pilot can proceed to land using visual references to the surface.

Active AFS-400 2017-12-21
91-33A Use of Alternate Grades of Aviation Gasoline for Grade 80/87, and Use of Automotive Gasoline

This circular also provides suggestions for added safety in the use of automotive gasoline in those aircraft engines and aircraft covered by Supplemental Type Certificates (STCs).

Active ANE-110 1984-07-18
33-7A Guidance for 30-Second and 2-Minute One-Engine-Inoperative (OEI) Ratings for Rotorcraft Turbine Engines

This advisory circular (AC) provides guidance and acceptable means, but not the only means, for demonstrating compliance with the specific requirements applicable to 30-second and 2-minute One-Engine-Inoperative (OEI) rotorcraft turbine engine ratings in part 33 of Title 14 of the Code of Federal Regulations (14 CFR part 33).

Active ANE-111 2009-06-11
20-128A Design Considerations for Minimizing Hazards caused by Uncontained Turbine Engine and Auxiliary Power Unit Rotor Failure

Sets forth a method of compliance with the requirements of Sections 23.903(b)(1), 25.901(d) and 25.903(d)(1) of the FAR pertaining to design precautions taken to minimize the hazards to an airplane in the event of uncontained engine or auxiliary power unit rotor (compressor and turbine) failure and engine fan blade failures.

Active ANM-114 1997-03-25
00-72 Best Practices for Airborne Electronic Hardware Design Assurance Using EUROCAE ED-80( ) and RTCA DO-254( )

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.

Active AIR-600 2022-10-07
20-185A Airworthiness Approval of Synthetic Vision Systems, Synthetic Vision Guidance Systems and Aircraft State Awareness Synthetic Vision Systems

The Federal Aviation Administration (FAA) has consolidated all synthetic vision related guidance into this advisory circular (AC).

Active AIR-600 2021-01-27
20-104 Revised Powerplant Engineering Report No. 3A Standard Fire Test Apparatus and Procedure (for Flexible Hose Assemblies)

Announces the availability of the subject report.

Active AIR-120 1978-07-19
145-11A Repair Station Guidance for Compliance with the Safety Agreement between the United States and the European Union

This advisory circular (AC) provides information and guidance regarding a repair station located in the United States obtaining, renewing, or amending a European Aviation Safety Agency (EASA) Part-145 approval and an Approved Maintenance Organization (AMO) located within the European Union (EU) obtaining, renewing, or amending a Federal Aviation Administration (FAA) repair station certificate under the provisions of the U.S.

Active AFS-300 2012-11-28
25-23 Airworthiness Criteria for the Installation Approval of a Terrain Awareness and Warning System (TAWS) for Part 25 Airplanes

Describes an acceptable means for obtaining FAA airworthiness approval for the installation of a Terrain Awareness and Warning System (TAWS) that has been approved under Technical Standard Order (TSO)-C151a.

Active ANM-130L 2000-05-22
00-69 The title is Best Practices for Airborne Software Development Assurance Using EUROCAE ED-12( ) and RTCA DO-178( )

This advisory circular (AC) provides information in the form of “best practices” and, as such, is not intended as guidance but rather as complementary information to ED-12C/DO-178C (and related documents) and AC 20-115D.

Active AIR-100 2017-07-21
33.4-3 Instructions for Continued Airworthiness, Aircraft Engine High Intensity Radiated Fields (HIRF) and Lightning Protection Features - Including Change 1

This advisory circular (AC) change updates the references provided in the original document. The AC change number and the date of the change are shown at the top of each applicable page.

Active ANE-111 2005-09-16
20-158A The Certification of Aircraft Electrical and Electronic Systems for Operation in the High-intensity Radiated Fields (HIRF) Environment

This advisory circular (AC) will provide you with information and guidance on how to show compliance with Title 14, Code of Federal Regulations (14 CFR) 23.1308, 25.1317, 27.1317, and 29.1317, High-intensity Radiated Fields (HIRF) Protection.

Active AIR-130 2014-05-30
20-167A Airworthiness Approval of Enhanced Vision System, Synthetic Vision System, Combined Vision System, and Enhanced Flight Vision System Equipment

The preamble accompanying the 2016 EFVS rule specifically references paragraphs 4-5, 4-5.c.4, 4-5.c.4.(h).(iv), and 6-2.f.4. These referenced paragraphs equate to paragraphs 4.5, 4.5.3.4, 4.5.3.4.8.4, 6.2.6.4, respectively.

Active AIR-130 2016-12-06
60-28B FAA English Language Standard for an FAA Certificate Issued Under 14 CFR Parts 61, 63, 65, and 107

This advisory circular (AC) introduces the Federal Aviation Administration (FAA) Aviation English Language Standard (AELS) and provides guidance to applicants, airmen, training organizations, Designated Examiners (DE), and flight and ground instructors on how to determine that an applicant for an FAA certificate or a person holding an FAA certificate meets the FAA AELS.

Active AFS-800 2017-06-02
20-177 Design and Installation Guidance for an Airborne System for Non-Required Telecommunication Service in Non Aeronautical Frequency Bands

ASNRT equipment is intended to provide flight crews with voice and data communication service over non aeronautical frequency bands.

Active AIR-130 2012-02-28
43-210A Standardized Procedures for Obtaining Approval of Data Used in the Performance of Major Repairs and Major Alterations - Change 1

This AC also provides information that can help determine if a proposed repair/alteration requires approved data, guidance and standardized procedures for obtaining field approval (or approval by other means) of data, and instructions for completing the field approval checklist.

Active AFS-300 2016-08-17
25-27A Development of Transport Category Airplane Electrical Wiring Interconnection Systems Instructions for Continued Airworthiness Using and Enhanced Zonal Analysis Procedure

That rule requires design approval holders (DAHs) and applicants to develop instructions for continued airworthiness (ICA) consisting of maintenance and inspection tasks, intervals, and procedures for the representative airplane’s electrical wiring interconnection systems (EWIS) for each affected type design.

Active ANM-100 2010-05-04
33.87-2 Comparative Endurance Test Method to Show Durability for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts

Comparative Endurance Test Method to Show Durability for Parts Manufacturer Approval of Turbine Engine and Auxiliary Power Unit Parts

Active ANE-110 2009-06-25
20-33B Technical Information Regarding Civil Aeronautics Manuals 1, 3, 4a, 4b, 5, 6, 7, 8, 9, 13, and 14

Advises the public that policy information contained in the subject Civil Aeronautics Manuals may be used in conjunction with specific sections of the Federal Aviation Regulations.

Active AIR-100 1975-05-01
33-11 Oxidation, Hot Corrosion, Thermal Fatigue, and Erosion Characteristics Testing to Support 14 CFR, Part 33, § 33.15, Compliancefor Turbine Engines

These equivalencies relate to oxidation, hot corrosion, and thermal fatigue and erosion characteristics in the engine environment.

Active ANE-111 2014-09-23
39-1A JIG Fixtures; Replacement of Wing Attach Angles and Doublers on Douglas DC-3 Series Aircraft, Airworthiness Directive 66-18-2

Describes methods of determining that jig fixtures used in the replacement of the subject attached angles and doublers meet the requirements of Airworthiness Directive 66-18-2.

Active AFS-340 1970-03-05
150/5200-36B Qualifications for Wildlife Biologist Conducting Wildlife Hazard Assessments and Training Curriculums for Airport Personnel Involved in Controlling Wildlife Hazards on Airports

This AC describes the qualifications for wildlife biologists who conduct Wildlife Hazard Assessments (WHA) for airports, and it addresses the minimum wildlife hazard management curriculum for the initial and recurrent training of airport personnel who implement Wildlife Hazard Management Plans (WHMPs).

Active AAS-300 2019-01-24
90-107 Guidance for Localizer Performance with Vertical Guidance and Localizer Performance without Vertical Guidance Approach Operations in the U.S.

This advisory circular (AC) provides guidance for operators to conduct Title 14 of the Code of Federal Regulations (14 CFR) part 97 instrument flight rules (IFR) Area Navigation (RNAV) Global Positioning System (GPS) instrument approach procedures (IAP) with Localizer Performance with Vertical guidance (LPV) and Localizer Performance without vertical guidance (LP) lines of minima using the wide area augmentation system (WAAS).

Active AFS-400 2011-02-11
33.87-1A Engine Overtorque Test, Calibration Test, Endurance Test, and Teardown Inspection for Turbine Engine Certification (§§ 33.84, 33.85, 33.87, 33.93)

This advisory circular (AC) provides a method of compliance for the test requirements of Title 14, of the Code of Federal Regulations (14 CFR) 33.84 (engine overtorque test) when the applicant chooses to run that test as part of the endurance test of § 33.87. It also provides information and guidance on the test requirements of § 33.85 (calibration test), § 33.87 (endurance test), and § 33.93 (teardown inspection).

Active ANE-111 2015-03-09
120-116 Operations and Airworthiness Considerations for U.S.-Based Leasing Companies Operating U.S.

This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, for U.S.

Active AFS-800 2017-10-27
61-143 Conversion Process for Pilot Certificates in Accordance with the Technical Implementation Procedures - Licensing as Part of the Bilateral Aviation Safety Agreement Between the FAA and EASA

This AC describes the procedures for converting a European Union Part-Flight Crew Licensing (EU Part-FCL) pilot license to a Federal Aviation Administration (FAA) pilot certificate. It also contains information on whom to contact and where to find the process for converting an FAA pilot certificate to an EU Part-FCL pilot license.

Active AFS-800 2021-06-22
61-135A Conversion Process for Pilot Certificates in Accordance with the Implementation Procedures for Licensing as part of the Bilateral Aviation Safety Agreement Between the Federal Aviation Administration and Transport Canada Civil Aviation Authority for Pilot Licensing

Pilots who are licensed by TCCA and comply with the special conditions listed within the Implementation Procedures for Licensing (IPL) are considered to be eligible for the associated FAA pilot certificate for airplane and/or rotorcraft–helicopter at the private, commercial, and airline transport pilot (ATP) levels including associated instrument ratings and applicable pilot type ratings.

Active AFS-800 2015-05-15