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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
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.

Cancelled AIR-200 2004-07-08
20-152 RTCA, Inc., Document RTCA/DO-254, Design Assurance Guidance for Airborne Electronic Hardware

This advisory circular (AC) applies to manufacturers and installers of products or appliances incorporating complex custom micro-coded components with hardware design assurance levels of A, B, and C.

Cancelled AIR-100 2005-07-05
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.

Cancelled AFS-340 1998-06-15
20-154 Guide for Developing a Receiving Inspection System for Aircraft Parts and Material - Change 1

This advisory circular (AC) provides guidance and information for incorporation into operators’ existing receiving/inspection systems to help prevent the introduction of unairworthy parts into inventories.

Cancelled AFS-300 2005-12-12
20-32B Carbon Monoxide (CO) Contamination in Aircraft Detection and Prevention

Provides information on the potential dangers of carbon monoxide contamination from faulty engine exhaust systems or cabin heaters of the exhaust gas heat exchanger type.

Cancelled ACE-110 1972-11-24
20-43C Aircraft Fuel Control

Alerts the aviation community to the potential hazards of inadvertent mixing or contamination of turbine and piston fuels, and provides recommended fuel control and servicing procedures.

Cancelled AFS-340 1976-10-20
20-29B Use of Aircraft Fuel Anti-icing Additives

Provides information on the use of anti-icing additives PFA-55MB and Mil-I-27686 as an acceptable means of compliance with the FARs that require assurance of continuous fuel flow under conditions where ice may occur in turbine aircraft fuel systems.

Cancelled ANE-100 1972-01-18
20-35C Tiedown Sense

Provides updated information of general use on aircraft tie down techniques and procedures.

Cancelled AFS-340 1983-07-12
20-48 Practice Guide for Decontaminating Aircraft

This publication is a guide to be used by groups or emergency readiness teams in the civil aviation industry for organizing and conducting practice exercises in aircraft decontamination.

Cancelled AFS-330 1966-05-05
20-158A The Certification of Aircraft Electrical and Electronic Systems for Operation in the High-intensity Radiated Fields (HIRF) Environment

a. 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.

Cancelled AIR-130 2014-05-30
20-185 Airworthiness Approval of Synthetic Vision Guidance System

In this advisory circular (AC), the Federal Aviation Administration (FAA) provides applicants with guidance for obtaining airworthiness approval for equipment installation of a Synthetic Vision Guidance System (SVGS) in aircraft.

Cancelled AIR-100 2015-12-17
20-109A Service Difficulty Program (General Aviation)

Describes the Service Difficulty Program as it applies to general aviation activities. Instructions for completion of the revised FAA Form 8010-4 (10-92), Malfunction or Defect Report, are provided.

Cancelled AFS-620 1993-04-08
20-186 Airworthiness Operational Approval of Cockpit Voice Recorder Systems

This advisory circular (AC) provides guidance for compliance with applicable regulations for the airworthiness and operational approval for required cockpit voice recorder (CVR) systems.

Cancelled AFS-300 2016-07-21