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United States Department of Transportation United States Department of Transportation

Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
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
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
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
120-49B Parts 121 and 135 Certification

The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

Active AFS-200 2024-10-07
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
120-126A Guidelines to Establish, Implement, and Maintain a DOT/FAA Drug and Alcohol Testing Program

This advisory circular (AC) provides guidelines for establishing, implementing, and maintaining a drug and alcohol testing program in accordance with Title 14 of the Code of Federal Regulations (14 CFR), part 120 and Title 49 of the CFR (49 CFR) part 40.

Active AAM-800 2025-04-08
120-125 Development and Use of an Operator's MEL, NEF Program, and CDL for Operations Under 14 CFR Parts 91K, 121, 125, and 135

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

Active AFS-200 2023-11-01
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
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
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
120-106B Scope and Recommended Content for an Airworthiness Agreement Between a Certificate Holder and a Maintenance Provider

This AC outlines the scope and recommended content for airworthiness agreements between a certificate holder (CH)
and its contract maintenance providers (CMP).

Active AFS-300 2024-06-18
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
120-111 Upset Prevention and Recovery Training - with Changes

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
120-78B Electronic Signatures, Electronic Recordkeeping, and Electronic Manuals

This advisory circular (AC) provides standards and guidance for electronic signatures, electronic recordkeeping, and electronic manual systems.

Active AFS-300 2024-12-11
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
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-200 2021-06-28
120-110A Aircraft Secondary Barriers and Alternate Flightdeck Security Procedures

The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

Active AFS-200 2023-06-01
120-26P 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 2024-11-14
120-80B Firefighting of General and High-Energy In-Flight Fires

This AC provides information on the hazards and risks of in-flight fires on transport category aircraft. 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
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
120-74B Parts 91, 121, 125, and 135 Flightcrew Procedures During Taxi Operations

Operators may integrate the information contained in Appendices 1 and 2 into their fleet-specific, route-specific, and equipment-specific operations and checklists.

Active AFS-200 2012-07-30
120-71B Standard Operating Procedures and Pilot Monitoring Duties for Flight Deck Crewmembers

This advisory circular (AC) provides guidance for the design, development, implementation, evaluation, and updating of standard operating procedures (SOP), and for pilot monitoring (PM) duties.

Active AFS-200 2017-01-10
120-57C Low Visibility Operations/Surface Movement Guidance and Control Systems (LVO/SMGCS)

This AC provides guidance for airport operators when developing an LVO/SMGCS Plan. There may be valid safety and operational reasons for a specific LVO/SMGCS Plan to vary from the AC 120-57 (current edition) guidance due to unique local issues, environmental factors, or volume of traffic operations.

Active AFS-400 2023-09-26
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
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
120-53B Guidance for Conducting and Use of Flight Standardization Board Evaluations - With Change 1

(2) Directly relating pilot training and qualification requirements to fleet characteristics, operating concepts, and pilot assignments.

Active AFS-100 2013-11-05
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
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
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
120-88A Preventing Injuries Caused by Turbulence

This AC provides information and practices that can be used to prevent injuries caused by turbulence.

Active AFS-200 2006-01-19
120-91A Airport Obstacle Analysis

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

Active AFS-400 2020-01-13
120-124 Continuous Airworthiness Maintenance Program (CAMP) Training Program

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

Active AFS-300 2023-10-24
120-108A Continuous Descent Final Approach

The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

Active AFS-400 2023-03-22
120-103A Fatigue Risk Management Systems for Aviation Safety

(4) Provides (in Appendix 2, Fatigue Risk Management System Development) the certificate holder with the necessary detailed guidance to prepare for the FRMS approval process, develop the required documentation, develop and apply fatigue risk management (FRM) and Safety Assurance (SA) processes, collect and analyze data, develop flightcrew FRMS operations procedures and a step-by-step process required for Federal Aviation Administration (FAA) evaluation and validation of the proposed FRMS application.

Active AFS-220 2013-05-06
120-96A Operations Control Center (OCC) for Helicopter Air Ambulance (HAA) Operations

This advisory circular (AC) provides information and recommendations to assist helicopter air ambulance (HAA) operators with the development, implementation, and integration of an Operations Control Center (OCC).

Active AFS-200 2016-01-07
120-115 Maintainer Fatigue Risk Management

Describes the basic concepts of human fatigue and how it relates to safety for aviation maintenance organizations and individual maintainers.

Active AFS-300 2016-12-02
120-123 Flightpath Management

FPM is the planning, execution, and assurance of the guidance and control of aircraft trajectory and energy, in flight or on the ground.

Active AFS-200 2022-11-21
120-97A Incorporation of Fuel Tank System Instructions for Continued Airworthiness into Operator Maintenance or Inspection Programs (Including Change 1)

On May 7, 2001, the Transport Airplane Fuel Tank System Design Review, Flammability Reduction and Maintenance and Inspection Requirements final rule was published in the Federal Register (FR).

Active AFS-300 2012-05-25
120-54A Advanced Qualification Program - (Change 1)

The AQP encourages innovation in the methods and technology that are used during instruction and evaluation, and efficient management of training systems.

Active AFS-280 2006-06-23
120-90 Line Operations Safety Audits

Provides the rationale and procedure for conducting an Line Operations Safety Audit (LOSA) at an airline.

Active AFS-230 2006-04-27
120-43 The Influence of Beards on Oxygen Mask Efficiency

Provides information about the effects of beards on masks in continuous flow and demand oxygen systems.

Active AFS-220 1987-01-27
120-85B Carriage of Cargo

This AC provides operators with recommended procedures for managing cargo operations. Developing and using these comprehensive procedures is key to establishing a safe and efficient cargo operation.

Active AFS-200 2022-01-25
120-76E Authorization for Use of Electronic Flight Bags

The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

Active AFS-400 2024-06-12
120-77A Performance Rules: Provisions Contained in an Operator Manual Under § 43.13(c)

The contents of this document do not have the force and effect of law and are not meant to bind the public in any way, and the document is intended only to provide information to the public regarding existing requirements under the law or agency policies.

Active AFS-300 2023-10-24
120-59B Internal Evaluation Programs

This AC provides information and guidance to persons operating under Title 14 of the Code of Federal Regulations (14 CFR) who are designing, developing, and implementing an Internal Evaluation Program (IEP).

Active AFS-200 2018-10-30
120-63 Helicopter Simulator Qualification

Provides a suggested means of compliance with the FAR regarding the evaluation and qualification of helicopter simulators to be used in training and checking

Active AFS-205 1994-10-11
120-64 Operational Use & Modification of Electronic Checklists

Provides an acceptable means, but not the only means, to address the processes for approval, operational use, and modification of electronic checklists (ECL) and ECL data by air carriers.

Active AFS-200N 1996-04-24
120-101 Part 121 Air Carrier Operational Control - Change 1

This advisory circular (AC) provides aviation safety inspectors (ASI) and air carrier management personnel with information to consider regarding certificate management and internal evaluation of operational control functions.

Active AFS-200 2010-06-28
120-121 Safety Risk Management Involving Items in Aircraft Cargo Compartments

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

Active AFS-200 2021-09-01
120-12A Private Carriage Versus Common Carriage of Persons or Property

Furnishes FAA personal and interested segments of industry with general guidelines for determining whether current or proposed transportation operations by air constitute private or common carriage.

Active AFS-820 1986-04-24
120-102B Incorporation of Electrical Wiring Interconnection Systems Instructions for Continued Airworthiness into an Operator’s Maintenance Program

This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, for Title 14 of the Code of Federal Regulations (14 CFR) part 121 certificate holders (CH) and part 129 operators (part 129, § 129.14) of U.S.

Active AFS-300 2024-06-03
120-89 Ground Deicing Using Infrared Energy

Provides guidelines and recommendation for deicing aircraft with infrared technology. Also provides means for obtaining approval for the use & inclusion of infrared technology in an operators deicing program.

Active AFS-220 2005-12-13
120-100 Basics of Aviation Fatigue

Summarizes the content of the FAA international symposium on fatigue, “Aviation Fatigue Management Symposium: Partnerships for Solutions”, June 17-19, 2008; Describes fundamental concepts of human cognitive fatigue and how it relates to safe Provides information on conditions that contribute to cognitive fatigue; and fatigue and/or mitigate the effects of fatigue.

Active AFS-200 2010-06-07
120-17B Reliability Program Methods—Standards for Determining Time Limitations

When accepted by the Federal Aviation Administration (FAA) and after receiving authorization for its use by operations specifications (OpSpecs), your reliability program gives you the authority and the means to adjust your maintenance schedule tasks and intervals without prior approval or acceptance by the FAA.

Active AFS-300 2018-12-19
120-72A Maintenance Human Factors Training

1.Provides descriptions of references and training materials to ensure that thereader can assemble a Maintenance Human Factors (MxHF) training programmatched to the applicable needs of their specific organization. 2.Provides many sources of current information to develop, implement,reinforce, and assess MxHF training materials. 3.Streamlines MxHF training development at the local level. 4.Is not mandatory, like any AC, and does not constitute a regulation

Active AFS-300 2017-04-11
120-113 Best Practices for Engine Time In Service Interval Extensions - Change 1

The AC explains the background of engine time in service intervals as well as the Federal Aviation Administration’s (FAA) regulatory requirements for time limitations and time in service intervals for engine overhauls. The AC also provides aircraft operators with information on the best practices for an engine time in service interval extension program and how to obtain an engine time in service interval extension.

Active AFS-300 2016-01-06
120-82 Flight Operational Quality Assurance

Provides guidance on one means, but not necessarily the only means, of developing, implementing, and operating a voluntary Flight Operational Quality Assurance (FOQA) program that is acceptable to the Federal Aviation Administration (FAA).

Active AFS-230 2004-04-12
120-92D Safety Management Systems for Aviation Service Providers

An SMS is intended to be designed and developed so the aviation organization’s employees are able to manage risks as a part of the operations and business decision-making processes.

Active AFS-900 2024-05-21
120-40B Airplane Simulator Qualification

Provides an acceptable means, but not the only means, of compliance with the Federal Aviation Regulations (FAR) regarding the evaluation of and qualification of airplane simulators used in training programs or airmen checking under Title 14 Code of Federal Regulations (CFR).

Active AFS-205 1991-07-29
120-35D Flightcrew Member Line Operational Simulations: Line-Oriented Flight Training, Special Purpose Operational Training, Line Operational Evaluation

This advisory circular (AC) presents guidelines for the design and implementation of Line Operational Simulations (LOS), including Line-Oriented Flight Training (LOFT), Special Purpose Operational Training (SPOT), and Line Operational Evaluation (LOE) for flightcrew members.

Active AFS-200 2015-03-13
120-87C Use of Child Restraint Systems on Aircraft

It is a part of the FAA’s ongoing commitment to educate and inform aircraft operators, crewmembers, and airline passengers regarding the use of CRSs on aircraft in order to encourage and increase the use of approved CRSs.

Active AFS-200 2015-09-24
120-58 Pilot Guide Large Aircraft Ground Deicing

Contains recommendations for ensuring safe operations of large airplanes during icing conditions and guidelines for the development of adequate procedures for the deicing of large airplanes.

Active AFS-200 1992-09-30
120-95A Portable Oxygen Concentrators

We intend for operators to use this AC as a resource during the development, implementation, and revision of standard operating procedures (SOP) and training programs regarding the use of POCs on board aircraft to increase the accessibility of air travel by passengers with disabilities.

Active AFS-200 2016-05-24
120-32 Air Transportation of Handicapped Persons

Identifies some of the problems handicapped air travelers face and provides some guidelines to airline personnel to help alleviate these problems.

Active AFS-223 1977-03-25
120-44A Air Carrier First Aid Programs

Provides guidance about first aid program resources, subjects, equipment, and pertinent regulations. This revision adds information about blood borne pathogen awareness programs.

Active AFS-203 2001-06-06
120-50A Guidelines for Operational Approval of Windshear Training Programs

Provides guidance for approval of low-altitude windshear training for operations under Title 14 of the Code of Federal Regulations, parts 121 and 135.

Active AFS-210 1996-02-09
120-62 Takeoff Safety Training Aid

Announces the availability of a joint industry/FAA Takeoff Safety Training Aid to help air carriers and pilots increase safety during the takeoff phase of flight.

Active AFS-210 1994-09-12
120-73 Damage Tolerance Assessment of Repairs to Pressurized Fuselages

The means of compliance described is intended to provide guidance to supplement the engineering and operational judgment that must form the basis of any compliance findings relative to repair assessments for pressurized fuselages.

Active ANM-100 2000-12-14
120-16G Air Carrier Maintenance Programs

Our explanation describes the scope and content of air carrier aircraft maintenance programs. This is important as there is a significant difference between an air carrier maintenance program and an inspection program used in non-air carrier maintenance operations.

Active AFS-300 2016-01-04
120-61B In-flight Radiation Exposure

This advisory circular (AC) provides basic background information and links to sources of more detailed information that can be used to improve air carrier programs that inform crewmembers about in-flight ionizing radiation exposure.

Active AFS-200 2014-11-21
120-112 Use of Liquid Water Equivalent System to Determine Holdover Times or Check Times for Anti-Icing Fluids

The LWE rate is used by the system with the appropriate endurance time (ET) regression equations and regression coefficients specified in an FAA-approved current database at http://66.46.192.186/RegressionInformation.html to determine the holdover time (HOT) or check time (CT) for an aircraft’s applied anti-icing fluid (Society of Automotive Engineer (SAE) Types I, II, III, and IV).

Active AFS-200 2015-07-14
120-105B Foreign Terminal Instrument Procedures (FTIP) Acceptance/Review

This AC contains guidelines for U.S. operators to use when reviewing Foreign Terminal Instrument Procedures (FTIP) for the operation of aircraft to/from foreign airports under Title 14 of the Code of Federal Regulations (14 CFR) parts 91 subpart K (part 91K), 121, 125 (including part 125 Letter of Deviation Authority (LODA) holders), and 135. The Federal Aviation Administration (FAA) does not intend for the use of any language in this circular to relieve a duty imposed by 14 CFR or other applicable law.

Active AFS-400 2025-06-04
120-98A Operator Information for Incorporating Fuel Tank Flammability Reduction Requirements into a Maintenance or Inspection Program (Including Change 1)

While these guidelines are not mandatory, they are derived from extensive FAA and industry experience in determining compliance with the relevant regulations.

Active AFS-300 2012-06-22
120-107 Use of Remote On-Ground Ice Detection System

The purpose of this system is to identify clear ice after deicing as a replacement for or to augment the post-deicing visual and tactile check of aircraft surfaces. This approval is essential to the ground-deicing/anti-icing program contained within Title 14 of the Code of Federal Regulations (14 CFR) part 121, § 121.629, part 135, § 135.227, or part 125, § 125.221

Active AFS-200 2011-01-10