|20-125||AFS-340||Water in Aviation Fuels Alerts the aviation community to the potential hazards of water in aviation fuels. Additionally, it outlines recommended procedures to prevent, detect, and eliminate water in the fuel systems of aircraft.||08-12-1997|
|20-124||ANM-112||Water Ingestion Testing for Turbine Powered Airplanes Describes a method of demonstrating compliance with the requirements of the FAR concerning the ingestion of water from the runway/taxiway surface into the airspeed system, the engine, and essential auxiliary power unit air inlet ducts of turbine engine power unit air inlet ducts of turbine engine powered airplanes.||09-30-1985|
|20-127||ANM-110B||Use of Society of Automotive Engineers (SAE) Class H11 Bolts Provides guidance on the use of SAE Class H11 bolts in primary structure on all aircraft, including gliders and manned free balloons, and on aircraft engines and propellers.||07-08-1987|
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.
|20-29B||ANE-100||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.||01-18-1972|
|20-65A||AIR-200||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.||07-08-2004|
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.
|20-35C||AFS-340||Tiedown Sense Provides updated information of general use on aircraft tie down techniques and procedures.||07-12-1983|
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.
|20-134||AIR-120||Test Procedures for Maximum Allowable Airspeed Indicators Provides guidance concerning test procedures which may be used in showing compliance with the standards in technical standards orders C 46a.||02-14-1990|
|20-33B||AIR-100||Technical Information Regarding Civil Aeronautics Manuals 1, 3, 4a, 4b, 5, 6, 7, 8, 9, 13, and 14 Advises the public that policy information contained in the subject Civil Aeronautics Manuals may be used in conjunction with specific sections of the Federal Aviation Regulations.||05-01-1975|
|20-41A||AIR-120||Substitute Technical Standard Order (TSO) Aircraft Equipment Sets forth an acceptable means for complying with rules governing aircraft equipment installations in cases involving the substitution of technical standard order equipment for functionally similar TSO approved equipment.||04-05-1977|
|20-109A||AFS-620||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.||04-08-1993|
|20-45||ACE-100||Safetying of Turnbuckles on Civil Aircraft Provides information on turnbuckle safetying methods that have been found acceptable by the FAA during past aircraft type certification programs.||09-17-1965|
|20-104||AIR-120||Revised Powerplant Engineering Report No. 3A Standard Fire Test Apparatus and Procedure (for Flexible Hose Assemblies) Announces the availability of the subject report.||07-19-1978|
|20-148||AIR-100||Reusable Software Components Supplies one means for developers, integrators and applications to gain FAA acceptance of software.||12-07-2004|
|20-68B||AFS-600||Recommended Radiation Safety Precautions for Ground Operation of Airborne Weather Radar Sets forth recommended radiation safety precautions for ground operation of airborne weather radar.||08-08-1980|
|20-144||ANM-100||Recommended Method for FAA approval of Aircraft Fire Extinguishing System Components Provides guidance on the various aspects that should be considered in the FAA approval process of fire extinguishing system components manufactured under a Production Certificate (PC), components to be FAA approved under the Part Manufacturer Approval (PMA) process, or design changes to components originally approved by either method. This AC does not constitute a regulation, however, it provides a method, for obtaining approval of aircraft fire extinguishing system components. This is intended to enhance the standardization of all FAA Aircraft Certification Offices (ACO) and Manufacturing Inspection District Offices (MIDO) in the approval process of the critical components of an aircraft fire extinguishing system.||09-22-2000|
|20-105B||AFS-340||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.||06-15-1998|
|20-152||AIR-100||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. These complex custom micro-coded components include application specific integrated circuits (ASIC), programmable logic devices (PLD), field programmable gate arrays (FPGA), or similar electronic components used in the design of aircraft systems and equipment. This AC provides a means (but not the only means) to gain Federal Aviation Administration (FAA) approval by showing the equipment design is appropriate for its intended function. Further, using this AC will help you satisfy airworthiness requirements when these types of electronic components are implemented||07-05-2005|
|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|
|20-53B||AIR-100||Protection of Aircraft Fuel Systems Against Fuel Vapor Ignition Caused by Lightning Provides information and guidance concerning an acceptable means, but not the only means, of compliance with Parts 23 or 25 of the Federal Aviation Regulations (FAR) applicable to preventing ignition of fuel vapors due to lightning.||06-05-2006|
Propeller Vibration and Fatigue
This advisory circular (AC) provides guidance and describes one method, but not the only method, for demonstrating compliance with §§ 23.907 and 25.907 of Title 14 of the Code of Federal Regulations (14 CFR) for the evaluation of vibratory stresses on propellers installed on airplanes. This evaluation uses fatigue and structural data obtained in accordance with 14 CFR part 35.
|20-48||AFS-330||Practice Guide for Decontaminating Aircraft The title is self-explanatory.||05-05-1966|
|20-135||ANM-112||Powerplant Installation and Propulsion System Component Fire Protection Test Methods, Standards and Criteria Provides guidance for use in demonstrating compliance with the powerplant fire protection requirements of the Federal Aviation Regulations (FAR). Included in this document are methods for fire testing of materials and components used in the propulsion engines and APU installations, and in areas adjacent to designated fire zones, as well as the rationale for these methods.||02-06-1990|