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Number Office Title Date
21-10A ANM-110 Flight Recorder and Cockpit Voice Recorder Underwater Locating Devices This AC provides an acceptable means of showing compliance with the underwater locating device (ULD) requirements of the Federal Aviation Regulations for recorder ULD’s. 04-19-1983
103-6 AFS-820 Ultralight Vehicle Operations-Airports, ATC, and Weather Provides guidance for the operation of ultralight vehicles in the U.S. Information includes airport and flight park operations, how to work with ATC, and the availability of weather services. 06-23-1983
20-35C AFS-340 Tiedown Sense Provides updated information of general use on aircraft tie down techniques and procedures. 07-12-1983
33-4 ANE-110 Design Considerations Concerning the Use of Titanium in Aircraft Turbine Engines Provides guidance and acceptable means, not the sole means, by which compliance may be shown with the design requirements of Part 33 to minimize the probability of the occurrence of an internal fire when titanium is used in aircraft turbine engines. 07-28-1983
150/5020-1 APP-400 Noise Control and Compatibility Planning for Airports Provides general guidance for noise control and compatibility planning for airports as well as specific guidance for preparation of airport noise exposure maps and airport noise compatibility programs by airport operators for submission under Title 14, Code of Federal Regulations, Part 150, and the Aviation Safety and Noise Abatement Act of 1979. Contains an expanded Table of Land Uses Normally Compatible with Various Levels of Noise. 08-05-1983
150/5060-5 APP-400 Airport Capacity And Delay

Explains how to compute airport capacity and aircraft delay for airport planning and design. Consolidated file contains Changes 1 and 2.

Note: Portions of this AC are under review for update. Please contact the National Planning and Environmental Division for assistance.

Because of the size of this document, it is available as one large file (see Complete) or as several smaller files (see Parts 1-4).

135-5B AFS-330 Maintenance Program Approval for Carry-On Oxygen Equipment for Medical Purposes Provides a means whereby air taxi operators may submit a maintenance program to comply with FAR Part 135, Section 135.91. 09-26-1983
43-12A AFS-340 Preventive Maintenance

This advisory circular (AC) provides information concerning preventive maintenance,including who may perform it, the standards of performance applicable to it, authority for approval for return to service, and the applicable recording requirements. This AC clarifies those areas most frequently misunderstood in the past.

120-41 AFS-400 Criteria for Operational Approval of Airborne Wind Shear Alerting and Flight Guidance Establishes an acceptable means, but not the only means, of obtaining operational approval of an airborne wind shear alerting and flight guidance system. It describes acceptable simulation test criteria, wind field modeling data, and minimum performance parameters for evaluating candidate systems. 11-07-1983
25.672-1 ANM-110B Active Flight Controls Sets forth an equivalent means of complying with the provisions of Part 25 of the Federal Aviation Regulations (FAR) pertaining to the certification requirements of active flight controls. The procedures set forth herein apply to load alleviation systems (SAS), and flutter suppression systems (FSS). These procedures provide compliance with Part 25 under the equivalent safety provisions of Section 21.21(b)(1) in addition to compliance with the applicable sections of Part 25. 11-15-1983
121-27 ACS-100 Guide for Air Carriers, Freight Forwarders, and Shippers in Obtaining Information Dealing with the Transportation of Hazardous Materials by Air Provides air carriers, freight forwarders, and shippers with sources of regulatory and training information and provides office locations and telephone numbers where technical assistance may be obtained dealing with the provisions of the appropriate regulations concerning the transportation by air of commodities which have been designated as regulated hazardous materials. 01-03-1984
103-7 AFS-820 The Ultralight Vehicle Provides guidance to the operators of ultralights in the United States. It discusses the elements, which make up the definition of ultralight vehicles for the purposes of operating under Federal Aviation Regulation (FAR) Part 103. It also discusses when an ultralight must be operated as an aircraft under the regulations applicable to certificated aircraft. 01-30-1984
91-61 AFS-800/AAM-500 A Hazard in Aerobatics: Effects of G-Forces of Pilots Provides background information on G-forces, their effect on the human body and their role in safe flying, and offers suggestions for avoiding problems caused by acceleration encountered in aerobatic maneuvers. 02-28-1984
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
91-33A ANE-110 Use of Alternate Grades of Aviation Gasoline for Grade 80/87, and Use of Automotive Gasoline Provides information relating to the use of alternate grades of gasoline when grade 80/87 aviation is not available and the resultant effects of the use of the alternate fuels which have higher TEL (tetraethyl lead) content. Suggestions are offered as acceptable means of avoiding engine operating difficulties when using alternate fuels. This circular also provides suggestions for added safety in the use of automotive gasoline in those aircraft engines and aircraft covered by Supplemental Type Certificates (STCs). 07-18-1984
11-2A ABC-100 Notice of Proposed Rulemaking Distribution System 07-26-1984
61-94 AFS-840 Pilot Transition Course for Self Launching or Powered Sailplanes (Motorgliders) Provides recommendations, but is not the only means, that may be used by glider pilots who desire to transition into sailplanes or gliders with self-launching capability. 07-31-1984
21-21 ACE-100 Use of Automobile Gasoline in Agricultural Aircraft

Sets forth acceptable conditions under which automobile gasoline (autogas) may be used in restricted category agricultural aircraft powered by Pratt and Whitney R-985 and R-1340 radial engines, and being used in agricultural operations under Federal Aviation Regulations Part 137.

23.607-1 ACE-111 Self-Locking Nuts on Bolts Subject to Rotation Provides information and guidance concerning compliance with Part 23 for self-locking nuts used on bolts subject to rotation in operation. 08-24-1984
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
25.1455-1 ANM-112 Waste Water/Potable Water Drain System Certification Testing Sets forth a specific method of compliance with the requirements of section 25.1455 of the FAR pertaining to draining of fluids through drain masts when the fluids are subject to freezing. This method is designed to verify that draining fluids will not accumulate as ice in sufficient quantity to be hazardous. Is for guidance purposes and to set forth one method of compliance that has been found acceptable. 03-11-1985
21-22 AIR-120 Injury Criteria for Human Exposure to Impact Describes a range of impact trauma which may be used to establish bases for acceptance levels or performance criteria in the evaluation of occupant survivability characteristics in civil aircraft. 06-20-1985
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
33.65-1 ANE-110 Surge and Stall Characteristics of Aircraft Turbine Engines Provides guidance material for acceptable means of demonstrating compliance with the requirements of Part 33 of the Federal Aviation Regulations (FAR) relative to surge and stall characteristics and thrust response of turbine engines. These guidelines do not constitute a regulation and are therefore not mandatory. 12-06-1985

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