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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
120-78B 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
25-11B Electronic Flight Displays

This advisory circular (AC) provides guidance for showing compliance with certain requirements of Title 14, Code of Federal Regulations part 25 for the design, installation, integration, and approval of electronic flight deck displays, components, and systems installed in transport category airplanes.

Active ANM-111 2014-10-07
91-78A Use of Electronic Flight Bags

This AC provides operational guidance to aircraft owners, operators, and pilots operating aircraft under Title 14 of the
Code of Federal Regulations (14 CFR) part 91 who want to replace required paper information and/or utilize hosted database and software applications as part of Electronic Flight Bag (EFB) functionality. This AC is not mandatory and does not constitute a regulation.

Active AFS-800 2024-02-23
20-173 Installation of Electronic Flight Bag Components

This advisory circular (AC) provides guidance material on the installation of electronic flight bag (EFB) components including aircraft connectivity provisions.

Active AIR-130 2011-09-27
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
20-152A Development Assurance for Airborne Electronic Hardware


This AC recognizes EUROCAE ED-80, Design Assurance Guidance for Airborne Electronic Hardware, dated April 2000, and RTCA DO-254, Design Assurance Guidance for Airborne Electronic Hardware, dated April 19, 2000.

Active AIR-600 2022-10-07
120-76E Authorization for Use of Electronic Flight Bags

This Flight Standards Service (FS) AC contains guidance on the operational use of Electronic Flight Bags (EFB). It is intended for all operators conducting flight operations under Title 14 of the Code of Federal Regulations (14 CFR) part 91 subpart K (part 91K), 121, 125, or 135 who want to replace required paper information or utilize other select applications as part of EFB functionality.

Active AFS-400 2024-06-12
91.21-1D Use of Portable Electronic Devices Aboard Aircraft

This AC provides aircraft owners, operators (i.e., certificate holders), and the flying public with information and guidance to comply with Title 14 of the Code of Federal Regulations (14 CFR) part 91, §91.21.

Active AFS-300 2017-10-27
20-136C Aircraft Electrical and Electronic System Lightning Protection

This AC provides you, the applicant, with information and guidance on how you can protect aircraft electrical and electronic systems from the effects of lightning. This AC describes a means, but not the only means, for you to demonstrate compliance with 14 CFR 23.1306 (amendment 23-61), 23.2515, 25.1316, 27.1316, or 29.1316, Electrical and electronic system lightning protection, as they pertain to the type or supplemental type certification of your aircraft.

Active AIR-626 2026-05-15
21-49 Gaining Approval Of Seats With Integrated Electronic Components

This AC applies to electronic components integrated into aircraft seats only. We don’t cover electronic components installed independent of the seat.

Active AIR-120 2011-02-09
23.1311-1C Installation of Electronic Display in Part 23 Airplanes

This advisory circular (AC) provides guidance for showing compliance with certain requirements of Title 14, Code of Federal Regulations (CFR), part 23, as well as general guidance for the design, installation, integration, and approval of electronic flight deck displays, components, and systems installed in part 23 category airplanes.

Active ACE-100 2011-11-17
21-48 Using Electronic Modeling Systems as Primary Type Design Data

In this AC, we define an “electronic modeling system” as a three?dimensional (3-D) modeling system.

Active AIR-100 2010-10-29
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
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
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. Like all AC material, this AC is not, in itself, mandatory and does not constitute a regulation.

Active ANE-110 2001-06-29
00-72 Best Practices for Airborne Electronic Hardware Design Assurance Using EUROCAE ED-80( ) and RTCA DO-254( )

This advisory circular (AC) provides “best practices” for airborne electronic hardware (AEH) design assurance and, is intended to be complementary information to EUROCAE ED-80, Design Assurance Guidance for Airborne Electronic Hardware, RTCA DO-254, Design Assurance Guidance for Airborne Electronic Hardware, and AC 20-152A, Development Assurance for Airborne Electronic Hardware.

Active AIR-600 2022-10-07
20-158B The Certification of Aircraft Electrical and Electronic Systems for Operation in the High-Intensity Radiated Fields (HIRF) Environment

This AC provides guidance for a new type certificate (TC) or a change to an existing TC when the certification basis requires you to address the HIRF certification requirements of §§ 23.1308 (Amendment 23-57), 23.2520 (Amendment 23-65), 25.1317, 27.1317, or § 29.1317.

Active AIR-626 2024-05-20
43-15 Recommended Guidelines for Instrument Shops

Provides information on obtaining printed copies of this document or electronic access to it. Provides information on obtaining printed copies of this document or electronic access to it.

Active AFS-350 1977-08-15
20-179 Certification Data Retention Agreements and Government Records

If you are planning to use an electronic data storage system as your means of retention for your type design data, we recommend you follow the guidance outlined in AC 21-48, Using Electronic Modeling Systems as Primary Type Design Data.

Active AIR-110 2013-06-10
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.). These guidelines offer acceptable, but not exclusive, methods of compliance with the powerplant instrument color marking requirements.

Active ANM-110 1985-09-30
20-157 How to Prepare Reliability Assessment Plans for Aircraft Systems and Equipment

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
91-88 Electronics News Gathering Operations

This advisory circular (AC) provides recommendations to ensure the safety of electronic news gathering (ENG) operations. Like all advisory material, this AC is not mandatory and does not constitute a regulation.

Active AFS-800 2016-06-28
23-23 Standardization Guide for Integrated Cockpits in Part 23 Airplanes

The AC acknowledges the General Aviation Manufacturers Association (GAMA) Publication #12, “Recommended Practices and Guidelines for an Integrated Flightdeck/Cockpit in a 14 CFR (or equivalent) Certificated Airplane,” as an acceptable means for showing compliance with applicable requirements for electronic displays in part 23 airplanes. Guidance in AC 23.1311, SAE, and RTCA documents was used in developing the GAMA Publication #12.

Active ACE-100 2004-09-30
20-163 Displaying Geometric Altitude Relative to Mean Sea Level

This advisory circular (AC) shows you how to gain a type certificate (TC), supplemental TC (STC), amended TC (ATC), amended supplemental TC (ASTC), or technical standard order (TSO) authorization for systems incorporating the presentation of geometric altitude relative to mean sea level (MSL) on electronic displays. b. This AC is not mandatory and does not constitute a regulation.

Active AIR-100 2009-07-09
43-208 Maintenance of Emergency Evacuations Systems for Aircraft Operating Under Part 121

EES include components of all aircraft slide-equipped exits affecting the emergency egress function (e.g., slides, slide/rafts, exit doors, exit door or hatch mechanisms, exit door or hatch opening assist mechanisms, tail cone release mechanisms, arm/disarm mechanisms, slide activation mechanisms, electronic slide monitoring systems, and slide-to-airframe attachments).

Active AFS-300 2003-04-04
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
20-177 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. ASNRT consists of electronic onboard equipment which is not required for any phase of operation nor intended for Minimum Equipment List (MEL) dispatch relief.

Active AIR-130 2012-02-28