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91-69A AFS-820 Seaplane Safety for FAR Part 91 Operators Provides revised information to FAR Part 91 seaplane operators regarding seaplane preflight, oral briefings for seaplane passengers, the use of safety belts and shoulder harnesses in seaplanes, escape/egress after capsizing, water survival, and flotation gear for seaplane occupants. This AC generally covers seaplanes engaged in not-for-hire operations. Most for-hire seaplane operations are subject to 14 CFR part 135, as well as part 91. 11-19-1999
91-68 AFS-820 Pilot Qualification and Operation of all Surplus Military Turbine-Powered Airplanes Provides information and guidance to pilots who wish to become qualified to operate surplus military turbine-powered airplanes under a letter of authorization, as required by operating limitations issued for this type of aircraft. 02-25-1992
91-67 AFS-820 Minimum Equipment Requirements for General Aviation Operations Under FAR Part 91 Describes acceptable methods for the operation of aircraft under Federal Aviation Regulations Part 91 with certain inoperative instrument and equipment, which are not essential for safe flight. 06-28-1991
91-66 AFS-840 Noise Abatement for Helicopters Presents guidelines intended to assist pilots, operators, managers, and other interested persons in the establishment of effective noise reduction procedures when operating helicopters. 06-04-1987
91-65 AFS-820 Use of Shoulder Harness in Passenger Seats Provides guidance and information to pilots, passengers, and maintenance personnel regarding the crash survivability aspects of small aircraft equipped with shoulder harnesses and the hazards of modifying seats, adding appendages to seats, and storage of articles, beneath the seats. Recommends inspection and maintenance of seats, lap belts and shoulder harnesses to enhance their effectiveness for crash survivability. 08-04-1986
91-63C ATO-R Temporary Flight Restrictions (TFRs/TFR) Describes the types of conditions under which the FAA may impose a temporary flight restriction. Also explains which elements have been delegated authority by the Administrator to issue TFR’s and lists the types of responsible agencies/offices from which the FAA will accept requests to establish TFR’s. Examples of NOTAM’s for each type of TFR are also provided. 05-20-2004
91-62A AIR-120 Use of Child Seats in Aircraft Provides information to assist the public in the proper use of child seats aboard aircraft and provides precautions so all occupants are able to exit rapidly from aircraft during emergencies. 10-15-1992
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
91-59A AFS-300 Inspection and Care of General Aviation Aircraft Exhaust Systems 07-23-2007
91-58A AFS-820 Uus of Pyrotechnic isual Distress Signaling Devices

This advisory circular (AC) suggests standards and procedures for the acquisition, use, and storage of pyrotechnic visual distress signaling devices that are intended for use in aircraft emergencies.

02-10-2000
91-57 AJV-8 Model Aircraft Operating Standards

Outlines, and encourages voluntary compliance with, safety standards for model aircraft operators.

06-09-1981
91-56B ANM-115 Continuing Structural Integrity Program for Airplanes Provides guidance material to manufacturers and operators of transport category airplanes for use in developing a continuing structural integrity program to ensure safe operation of older airplanes throughout their operational lives. This guidance material applies to large transport airplanes which were certified under the fail-safe and fatigue requirements of Civil Air Regulations (CAR) 4b o 14 CFR part 25 of the Federal Aviation Regulations (FAR), prior to Amendment 25-45, and which have a maximum gross weight greater than 75,000 pounds. Guidance material on this subject for other transports is provided in AC 91-60. The procedures set forth by this AC are applicable to the large transport category airplanes operated under Subpart D of part 91, and parts 121 and 125. 03-07-2008
91-55 AFS-310 Reduction of Electrical System Failures following Aircraft Engine Starting Warns general aviation aircraft owner/pilots and maintenance personnel of possible total electrical system failure following aircraft engine starting. 10-28-1980
91-54 AFS-820 Automatic Reporting Systems Altimeter Setting and Other Operational Data Provides guidelines for the development and installation of automatic reporting systems for altimeter setting and other operational data intended for use in connection with IFR operations. 02-26-1979
91-53A AFS-820 Noise Abatement Departure Profile Describes acceptable criteria for safe noise abatement departure profiles (NADP) for subsonic turbojet-powered airplanes with a maximum certificated gross takeoff weight of more than 75,000 pounds. These procedures provide the user with one means, although not the only means, of establishing acceptable NADP’s. These departure profiles are consistent with the airworthiness standards required by the Federal Aviation Regulations Part 25 for type certification and Part 91 for general airplane operations. 07-22-1993
91-51A AFS-820 Effect of Icing on Aircraft Control and Airplane Deice and Anti-Ice Systems Provides information for pilots regarding the hazards of aircraft icing and the use of airplane deice and anti-ice systems. 07-19-1996
91-50 AFS-820 Importance of Transponder Operation and Altitude Reporting Provides information and guidance concerning the importance of transponder operation and altitude reporting in the National Airspace System. 08-24-1977
91-48 AFS-820 Acrobatics-Precision Flying with a Purpose Provides information to persons who are interested in acrobatic flying to improve their piloting skills as recreation, sport, or as a competitive activity. 06-29-1977
91-46 AFS-350 Gyroscopic Instruments - Good Operating Practices Issued to re-emphasize to general aviation instrument-rated pilots the need to determine the proper operation of gyroscopic instruments, the importance of instrument crosschecks and proficiency in partial-panel operations. 02-04-1977
91-45C AFS-810 Waivers: Aviation Events Provides prospective aviation event sponsors and other interested parties with information necessary to assist in planning and conducting a safe aviation event. In addition, it provides information on the application process for a certificate of Waiver or Authorization. 02-01-1990
91-44A AIR-120 Operational and Maintenance Practices for Emergency Locator Transmitters and Receivers Combines and updates material in several Advisory Circulars on the subject of emergency locator transmitters (ELT) receivers for airborne service. 12-12-1980
91-42D AFS-310 Hazards of Rotating Propeller and Helicopter Rotor Blades Updates statistical information on propellers-and rotor-to-person accidents and offers suggestions to reduce the frequency of such accidents. 03-03-1983
91-37A AFS-820 Truth in Leasing Provides information and guidance for lessees and conditional buyers of U.S. registered large civil aircraft. If you are planning to charter an airplane take a moment to learn about chartered and leased aircraft. 01-08-1974
91-36D ATO-R Visual Flight Rules (VFR) Flight Near Noise-Sensitive Areas Encourages pilots making VFR flights near noise-sensitive areas to fly at altitudes higher than the minimum permitted by regulation and on flight paths, which will reduce aircraft noise in such area. 09-17-2004
91-35 AAM-620 Noise, Hearing Damage, and Fatigue in General Aviation Pilots Acquaints pilots with the hazards of regular exposure to cockpit noise. Especially pertinent are piston-engine, fixed-wing, and rotary-wing aircraft. 03-28-1972

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