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Number Office Title Date
20-53C AIR-600 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. This AC recommends how to protect an aircraft’s fuel system from lightning strikes that may ignite fuel vapors.

For guidance on compliance pursuant to 14 CFR 25.954, Fuel system lightning protection, for transport category airplanes, see AC 25.954-1, Transport Airplane Fuel System Lightning Protection, dated September 6, 2018 (83 FR 47548, September 20, 2018).

This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to obtain certification for fuel system lightning protection. However, if you use the means described in this AC, you must follow it in all important respects. The term “must” is used to indicate mandatory requirements when following the guidance in this AC. The term “should” is used when following the guidance as recommended, but not required to comply with this

09-24-2018
20-115D AIR-134 Airborne Software Development Assurance Using EUROCAE ED-12( ) and RTCA DO-178( )

This AC describes an acceptable means, but not the only means, for showing compliance with the applicable airworthiness regulations for the software aspects of airborne systems and equipment in type certification or TSO authorization. This AC is notmandatory and does not constitute a regulation. However, if you use the means described in the AC, you must follow it in all applicable respects. 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.

07-21-2017
20-151C AIR-100 Airworthiness Approval of Traffic Alert and Collision Avoidance Systems (TCAS II), Versions 7.0 & 7.1 and Associated Mode S Transponders We wrote this advisory circular (AC) to guide applicants seeking airworthiness approval for TCAS II version 7.1 (V7.1) certified to technical standard order (TSO) C119c, TSO-C119d or TSO-C119e, Traffic Alert and Collision Avoidance System (TCAS) Airborne Equipment, TCAS II with Hybrid Surveillance. This AC also provides guidance for applicants seeking airworthiness approval for stand-alone Mode S transponders certified to TSO-C112e, Air Traffic Control Radar Beacon System/Mode Select (ATCRBS/Mode S) Airborne Equipment. 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. 07-21-2017
20-164A AIR-100 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). This AC is not mandatory and does not constitute a regulation. This AC describes anacceptable means, but not the only means, to demonstrate aircraft tolerance to PEDs. However, if you use the means described in this AC, you must follow it entirely. The term “must” is used to indicate mandatory requirements when following the guidance in this AC. The terms “should” and “recommend” are used when following the guidance is recommended but not required to comply with this AC. 06-09-2017
20-167A AIR-130 Airworthiness Approval of Enhanced Vision System, Synthetic Vision System, Combined Vision System, and Enhanced Flight Vision System Equipment This advisory circular (AC) provides guidance for gaining airworthiness approval for enhanced and synthetic vision systems in aircraft. Specifically, it provides one acceptable means for complying with Title 14 of the Code of Federal Regulations (14 CFR) part 23, 25, 27, or 29 airworthiness regulations when installing a synthetic vision system (SVS), enhanced vision system (EVS), combined vision system (CVS), or enhanced flight vision system (EFVS) in an airplane or rotorcraft. Since the release of Draft AC 20-167A for public comment, the FAA revised the standard format for Advisory Circulars. AC 20-167A is formatted in compliance with the new standard format, meaning the numbering of paragraphs changed from the draft that was presented for public comment. 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. 12-06-2016
20-182A AIR-130 Airworthiness Approval for Aircraft Weather Radar Systems This advisory circular (AC) provides guidance for the initial and follow-on airworthiness approval of aircraft weather radar systems meeting the latest revision of the Technical Standard Order (TSO)-C63, Airborne Weather Radar Equipment. This AC covers aircraft radar systems with weather detection and ground mapping, forward-looking windshear detection, forward looking turbulence detection, and atmospheric threat awareness capability. The guidance is applicable to Title 14 of the Code of Federal Regulations, parts 23, 25, 27, and 29 aircraft. For forward-looking windshear and/or turbulence detection capability, the guidance in this AC applies to parts 25 and 23 fixed-wing airplane installations. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, of accomplishing airworthiness approval for the installation of airborne weather radar equipment. However, if you use the means described in the AC, you must follow it in all important respects. Appendix A provides additional guidance on the forward-looking windshear system annunciation, alert, and display icons. A list of related documents can be found in Appendix B of this AC. This AC provides guidance intended for new approvals. This AC is not intended to modify, change, or cancel existing equipment design or airworthiness approvals. Equipment with existing approvals can continue to be installed within the provisions of its original design and airworthiness certification. 10-01-2016
20-140C AIR-130 Guidelines for Design Approval of Aircraft Data Link Communication Systems Supporting Air Traffic Services (ATS)

This AC provides guidance material for applicants seeking an airworthiness approval for aircraft with an installed data link system intended to support air traffic services (ATS) data communication. It identifies specific configurations of aircraft data link systems for applicants seeking approval for type certificates (TC) and supplemental type certificates (STC) in order to facilitate operational approvals. Appendix A of this AC provides a list of related documents. Appendix B of this AC contains a list of applicable acronyms. 1.2 This AC describes an acceptable means, but not the only means, for you to gain airworthiness approval for aircraft data link system equipment. However, if you use the means described in this AC, you must follow it in all important respects. 1.3 The term “must” is used in this AC to indicate a mandatory requirement driven by regulation that is to be followed when using the guidance in this AC. The term “should” is used in this AC to indicate a recommendation and not a requirement when using the guidance in this AC. Since this AC represents an accepted means of compliance, an applicant seeking an alternative to any requirement or recommendation within this AC will need to be discussed with the Aircraft Certification Office (ACO) in order to achieve a common performance level with the AC.

09-28-2016
20-160A AIR-130 Onboard Recording of Controller Pilot Data Link Communication (CPDLC) In Crash Survivable Memory

This advisory circular (AC) provides guidance material for applicants seeking an airworthiness approval for aircraft with an installed Data Link Recording (DLR) system that records Controller Pilot Data Link Communications (CPDLC). This AC describesan acceptable means, but not the only means, to gain design approval of your data link communication recording system. However, if you use the means described in the AC, you must follow it in its entirety.

In this AC, we focus on data to be recorded and logical recording point locations for storing CPDLC messages in onboard crash-survivable memory. These logical point locations, also called observation points, are physical locations within airborne avionic architectures deemed ideal for recording system data sources, as defined in Section 7.1 of this AC.

09-28-2016
20-186 AFS-300 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. Non-required installations may use this guidance when installing a CVR system as a voluntary safety enhancement. This AC is not mandatory and is not a regulation. This AC describes an acceptable means, but not the only means, to comply with Title 14 of the Code of Federal Regulations (14 CFR). However, if you use the means described in this AC, you must conform to it in totality for requiredinstallations. 07-21-2016
20-153B AIR-130 Acceptance of Aeronautical Data Processes and Associated Databases This AC describes an acceptable means, but not the only means, for showing compliance with the applicable airworthiness regulations for equipment with an installed aeronautical database. This AC is not mandatory and is not a regulation. However, if you use the means described herein, you must follow it in all important respects. 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. The term “objectives” identifies requirements when used in this AC. 04-19-2016
20-77B AFS-300 Use of Manufacturers’ Maintenance Manuals

This advisory circular (AC) informs owners and operators about the usefulness of manufacturer’s maintenance manuals for servicing, repairing, and maintaining aircraft, engines, and propellers.

01-04-2016
20-149B AIR-100 Installation Guidance for Domestic Flight Information Service- Broadcast

This advisory circular (AC) supports the use of Flight Information Services-Broadcast (FIS-B) weather and other aeronautical data link products for enhanced situation awareness of flight conditions. In this AC, the Federal Aviation Administration (FAA) recommends one way to gain airworthiness approval for the installation of FIS-B avionics equipment. We identify safety and installation requirements for continued airworthiness of aircraft FIS-B avionics equipment, systems, and applications. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to gain airworthiness approval for your FIS-B avionics equipment. However, if you use the means described in this AC, you must follow it in its entirety.

12-21-2015
20-185 AIR-100 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. This AC only provides airworthiness guidance to applicants for eligible SVGS for use on Special Authorization (SA) Category (CAT) I Instrument Landing System (ILS) approaches. Operational approval must still be obtained from the Flight Standards Service.

12-17-2015
20-165B AIR-130 Airworthiness Approval of Automatic Dependent Surveillance - Broadcast OUT Systems

 This advisory circular (AC) provides guidance for the installation and airworthiness approval of Automatic Dependent Surveillance - Broadcast (ADS-B) OUT systems in aircraft.

12-07-2015
20-184 AIR-133 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. As with all advisory material, this AC is not mandatory and does not constitute a regulation. It is issued for guidance purposes and to outline a means of compliance with applicable airworthiness requirements.

This advisory circular (AC) provides manufacturers and installers with an acceptable means of compliance to meet the installation, operation, maintenance and airworthiness requirements for installation of lithium batteries on aircraft (14 CFR part 21, 23, 25, 27 and 29).

10-15-2015
20-18B ANE-111 Qualification Testing of Turbojet and Turbofan Engine Thrust Reversers This advisory circular (AC) provides guidance for demonstrating compliance with Title 14 of the Code of Federal Regulations (14 CFR) 33.97, Thrust reversers, and for certifying a thrust reverser for use with a turbojet or turbofan engine. It does not address aircraft-level effects of the installation and use of a thrust reverser. 07-07-2015
20-150B AIR-130 Airworthiness Approval of Satellite Voice (SATVOICE) Equipment Supporting Air Traffic Service (ATS) Communication

This advisory circular (AC) provides guidance on airworthiness approval for designers, manufacturers, and installers of Satellite Voice (SATVOICE) equipment supporting air traffic service (ATS). In this AC, the Federal Aviation Administration (FAA) recommends one way to gain airworthiness approval for SATVOICE equipment. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to gain airworthiness approval for your SATVOICE equipment. However, if you use the means described in this AC, you must follow it in its entirety.

12-23-2014
20-183 AIR-130 Laser Airworthiness Installation Guidance

In this advisory circular (AC), we recommend one way to obtain Federal Aviation Administration (FAA) airworthiness approval for the installation of aircraft?mounted, nonrequired, invisible spectrum laser equipment such as infrared surveillance laser and light detection and ranging (LIDAR) equipment. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to comply with the requirements found in Title 14 of the Code of Federal Regulations (14 CFR) 23.1301, 23.1309, 23.1529, 23.1581, 25.1301, 25.1309, 25.1529, 25.1581, 27.1301, 27.1309, 27.1529, 27.1581, 29.1301, 29.1309, 29.1529, and 29.1581 for the laser equipment aspects only. If you use the means described in this AC, you must follow it in its entirety.

12-15-2014
20-166A AIR-110 Issue Paper Process

a.  This advisory circular (AC) provides information on the use of issue papers and gives you guidance on your role in describing and tracking the resolution of significant technical, regulatory, and administrative issues derived from the issue paper process. This document provides guidance to you relative to FAA Order 8110.112, Standardized Procedures for Usage of Issue Papers and Development of Equivalent Levels of Safety Memorandums.

b.  This AC is not mandatory and is not a regulation. This AC describes an acceptable means, but not the only means, to comply with Title 14 of the Code of Federal Regulations (14 CFR).  However, if you choose to use the means described in this AC follow it in its entirety. 

11-06-2014
20-147A ANE-100 Turbojet, Turboprop, Turboshaft, and Turbofan Engine Induction System Icing and Ice Ingestion

This advisory circular (AC) provides guidance for demonstrating compliance with the engine induction system icing and engine installation ice requirements of Title 14 Code of Federal Regulations (14 CFR) parts 23, 25, 27, 29, and 33. 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. This AC discusses turboshaft engine installations, but not the rotary wing aircraft they are installed on.

10-22-2014
20-24D AIR-20 Approval of Propulsion Fuels, Additives, and Lubricating Oils

This advisory circular (AC) provides guidance applicable to adding fuels and oils as engine, aircraft, or auxiliary power unit (APU) operating limitations. It also provides guidance on fuel and lubricating oil specifications and standards, and on propulsion fuel and/or lubricating oil certification plans. This AC provides acceptable methods, but not the only methods, that may be used to approve aircraft, engines, or APUs to operate with specified propulsion fuels and lubricating oils.

06-30-2014
20-176A AIR-140 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. This revision, AC 20-176A, includes guidance for indicating FAA approval on a service document.

06-16-2014
20-158A AIR-130 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.

b. This AC is not mandatory and does not constitute a regulation. It describes an acceptable means, but not the only means, for you to show compliance with the requirements for protection of the operation of electrical and electronic systems on an aircraft when the aircraft is exposed to an external HIRF environment. If you use the means described in this AC, you must follow it entirely to comply with this AC. The term "must" is used to indicate mandatory requirements when following the guidance in this AC. The term "should" is used when following the guidance is recommended but not required to comply with this AC.

05-30-2014
20-181 AIR-130 Airworthiness Approval of Attitude Heading Reference System (AHRS) Equipment

This advisory circular (AC) supplements existing airworthiness approval guidance for attitude heading reference system (AHRS) articles approved under technical standard order (TSO)?C201, Attitude Heading Reference System, or later revisions.  TSO-C201 includes performance standards for non-gimbaled attitude, heading, and turn and slip systems. 

04-07-2014
20-138D AIR-130 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. There are several new changes such as: equipment capability versus installed limitations; clarifying database configuration versus equipment capability; adding step-down fixes to navigation databases; a new appendix for demonstrating radius to fix (RF) leg capability; and, including required navigation performance (RNP) prediction guidance for RNP authorization required approach (RNP AR APCH).

03-28-2014

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This page was originally published at: https://www.faa.gov/regulations_policies/advisory_circulars/index.cfm/go/document.list/parentTopicID/101