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Number Office Title Date
20-34D AFS-340 Prevention of Retractable Landing Gear Failures
Updates statistical information related to landing accidents involving aircraft with retractable landing gear and suggests procedures to minimize those accidents.
08-08-1980
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
20-111 AFS-350 Communication Interference Caused by Unintentional Keyed Microphones
Alerts the aviation community to the potential hazards created by unintentional keying of microphones resulting in radio transmissions from airborne, mobile, and ground based radio transmitters and gives guidance on alleviating ensuing hazards.
10-10-1980
20-30B AIR-120 Aircraft Position Light and Anticollision Light Installations
Sets forth acceptable means, but not the only means, of showing compliance with the Federal Aviation Regulations (FAR) applicable to installed position lights and anti-collision lights.
07-20-1981
20-113 ACE-100 Pilot Precautions and Procedures to be taken in Preventing Aircraft Reciprocating Engine Induction System and Fuel System Icing Problems
Provides information pertaining to aircraft engine induction system icing and the use of fuel additives to reduce the hazards of aircraft operation that may result from the presence of water and ice in aviation gasoline and aircraft fuel systems.
10-22-1981
20-114 AIR-100 Manufacturers' Service Documents
Suggests acceptable methods by which product manufacturers may indicate FAA approval of recommended actions prescribed in manufacturers’ service documents.
10-22-1981
20-116 ACE-100 Marking Aircraft Fuel Filler Openings with Color Coded Decals
Discusses the conditions under which color coded decals may be used to comply with the requirements in FAR Parts 23, 25, 27, and 29 for marking fuel filler openings.
09-17-1982
20-117 AFS-200 Hazards Following Ground Deicing and Ground Operations in Conditions Conducive to Aircraft Icing
Provides information on the identified hazards associated with ground deicing and ground operations in conditions conducive to aircraft icing.
12-03-1982
20-119 AIR-120 Fuel Drain Valves
Provides an acceptable means, but not the only means, of compliance with the requirements of the FARs for positive locking of fuel drain valves in the closed position.
02-07-1983
20-35C AFS-340 Tiedown Sense
Provides updated information of general use on aircraft tie down techniques and procedures.
07-12-1983
20-120 ASM-500 Nondirectional Beacon Frequency Congestion
Recommends several actions that the user can take to alleviate problems of frequency congestion in the 190-535 kHz frequency range.
06-18-1984
20-123 AFS-330 Avoiding or Minimizing Encounters with Aircraft Equipped with Depleted Uranium Balance Weights during Accident Investigations
Provides information and guidance to individuals who come in contact with depleted uranium contained in aircraft control surfaces during accident investigations.
12-20-1984
20-88A ANM-110 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.
09-30-1985
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
20-67B AIR-120 Airborne VHF Communication Equipment Installations 01-16-1986
20-118A ACE-100 Emergency Evacuation Demonstration
Sets forth acceptable means, but not the only means, of showing compliance with the Federal Aviation Regulations (FAR) applicable to required emergency evacuation demonstrations from airplanes certified to the requirements of SFAR 23, SFAR 41, Appendix A of Part 135, or Part 23, commuter category.
03-09-1987
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
20-133 AIR-130 Cockpit Noise and Speech Interference Between Crewmember
Provides information about the relationship between flight crew members cockpit voice communication and cockpit noise levels. Guidance, on speech interference levels, noise measurement and measurement systems, and methods to improve cockpit communication, is provided for those manufacturers, owners or operators who believe cockpit noise may be a problem on their aircraft. This guidance material is relevant to the operation of all types of civil aircraft.
03-22-1989
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
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
20-122A AFS-340 Anti-misfueling Devices: Their Availability and Use
Includes information relating to the Society of Automotive Engineers (SAE) standard dimensions for fueling ports now being incorporated during new aircraft production by all General Aviation Manufacturer’s Association member companies. It also makes recommendations to the fuel suppliers and Fixed Base Operators to change their fuel dispensing nozzles to meet the dimensions referenced in the SAE standard.
01-29-1991
20-131A ANM-110 Airworthiness Approval of Traffic Alert and Collision Avoidance Systems (TCAS II) and Mode S Transponders
Provides guidance material for the airworthiness and operational approval of Traffic Alert and Collision Avoidance Systems (TCAS II) and Mode S transponders. Like all AC material, this AC is not mandatory and does not constitute a regulation. Issued for guidance purpose and to outline a method of compliance with the rules.
03-29-1993
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
20-128A ANM-114 Design Considerations for Minimizing Hazards caused by Uncontained Turbine Engine and Auxiliary Power Unit Rotor Failure
Sets forth a method of compliance with the requirements of Sections 23.903(b)(1), 25.901(d) and 25.903(d)(1) of the FAR pertaining to design precautions taken to minimize the hazards to an airplane in the event of uncontained engine or auxiliary power unit rotor (compressor and turbine) failure and engine fan blade failures. It is for guidance and to provide a method of compliance that has been found acceptable.
03-25-1997
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
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