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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
20-135 Powerplant Installation and Propulsion System Component Fire Protection Test Methods, Standards and Criteria with change 1

Provides guidance for use in demonstrating compliance with the powerplant fire protection requirements of the Federal Aviation Regulations (FAR).

Active AIR-600 1990-02-06
20-190 Aircraft Electromagnetic Compatibility Certification

This advisory circular (AC) identifies SAE Aerospace Recommended Practices (ARP) 60493, Guide to Civil Aircraft electromagnetic Compatibility (EMC), dated October 25, 2017, and European Organization For Civil Aviation Equipment (EUROCAE) ED-248, Guide to Civil Aircraft Electromagnetic Compatibility (EMC), dated January 22, 2018 as recommended practices for showing compliance pursuant to the following Title 14, Code of Federal Regulations (14 CFR):

  • § 23.2500
  • §§ 25.1309(a), 25.1309(e), 25.1353(a), and 25.1431(c)
  • §§ 27.1309(a), and Part 27 Appendix B
  • §§ 29.1309(a), 29.1309(g), 29.1353(a), and 29.1431(b)

Active AIR-600 2018-06-25
20-189 Management of Open Problem Reports (OPRs)

This advisory circular (AC) describes an acceptable means for showing compliance with the applicable airworthiness regulations for the management of open problem reports (OPRs) in technical standard order (TSO) authorization and type certification for the system, software, and airborne electronic hardware (AEH) domains.This document contains guidance that is not legally binding in its own right nor will be relied upon by the Department of Transportation or the Federal Aviation Administrationas a separate basis for affirmative enforcement action or other administrative penalty.

Active AIR-600 2022-09-16
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
20-144A FAA Approval of Electrical Firing Cartridge Components in an Aircraft Fire Extinguishing or Suppression System

This advisory circular (AC) provides acceptable means for showing compliance with the requirements of title 14, Code of Federal Regulations (14 CFR) 23.1301, amendment 23-62 or earlier, 25.1301, 27.1301, and 29.1301 (herein, collectively, 2X.1301), Function and installation, with regard to fire extinguishing or suppression systems that contain electrical firing cartridge components.

Active AIR-600 2018-10-11
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
20-53C Protection of Aircraft Fuel Systems Against Vapor Ignition Caused by Lightning

This advisory circular (AC) provides applicants with guidance for obtaining Federal Aviation Administration (FAA) approval of compliance pursuant to title 14, Code of Federal Regulations (14 CFR) 23.954, 27.954, and 29.954, Fuel system lightning protection.

Active AIR-600 2018-09-24
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
20-152A Development Assurance for Airborne Electronic Hardware

This advisory circular (AC) describes an acceptable means, but not the only means, for showing compliance with the applicable airworthiness regulations for the electronic hardware aspects of airborne systems and equipment for type certification or Technical Standard Order (TSO) authorization.

Active AIR-600 2022-10-07