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00.31A ARD-300 [Large AC] United States (U.S.) National Aviation Standard for the Very High Frequency Omnidirectional Radio Range (VOR)/Distance Measuring Equipment (DME)/Tactical Air Navigation (TACAN) Systems This advisory Circular is issued in inform the aviation community of the establishment and content of the United States (U.S.) National Aviation Standard for the Very High Frequency Omni directional Radio Range (VOR)/Distance Measuring Equipment (DME)/Tactical Air Navigation (TACAN) Systems. 09-20-1982
23-9 ACE-100 [Large AC] Evaluation of Flight Loads on Small Airlpanes with T, V, +, or Y Empennage Configurations Provides information and guidance concerning compliance with Part 23 of the Federal Aviation Regulations (FAR) applicable to evaluation of empennage design flight loads on configurations where the horizontal tail surfaces are supported by the vertical tail, or have appreciable dihedral. 01-27-1988
43-4A AFS-340 [Large AC] Corrosion Control for Aircraft Summarizes current available data regarding identification and treatment of corrosive attack on aircraft structure and engine materials. SN 050-007-01044-3. 07-25-1991
21-18 AWS-1 [Large AC] Bilateral Airworthiness Agreements Makes available to interested persons copies of all current U.S. Bilateral Airworthiness Agreements (BAA) together with an explanation of their intent. SN 050-007- 00614-4. 08-20-1982
65-15A AFS-630 [Large AC] Airframe and Powerplant Mechanics Airframe Handbook

Designed to familiarize student mechanics with airframe construction, repair, and the operating theory of airframe systems. SN 050-007-00391-9

25.775-1 ANM-110 Windows and Windshields Sets forth an acceptable means, but not the only means, of demonstrating compliance with the provisions of Title 14, Code of Federal Regulations (14 CFR) part 25 pertaining to the certification requirements for windshields, windows, and mounting structure. Guidance information is provided for showing compliance with § 25.775(d), relating to structural design of windshields and windows for airplanes with pressurized cabins. Terms used in this AC, such as “shall” or “must,” are used only in the sense of ensuring applicability of this particular method of compliance when the acceptable method of compliance described herein is used. Other methods of compliance with the requirements may be acceptable. While these guidelines are not mandatory, they are derived from extensive Federal Aviation Administration (FAA) and industry experience in determining compliance with 14 CFR. This AC does not change, create any additional, authorize changes in, or permit deviations from, regulatory requirements. 01-17-2003
65-25F AFS-300 William (Bill) O’Brien Aviation Maintenance Technician Awards Program This advisory circular (AC) outlines the participation requirements for the FederalAviation Administration (FAA) William (Bill) O’Brien Aviation Maintenance Technician (AMT) Awards Program. This revision addresses changes to the Awards Program Awards Program and provides instructions for AMTs and the employers of AMTs participating in the online Awards Program. 08-18-2016
120-81 AFS-200W Whistleblower Protection Program (Air Carrier) Provides guidance for air carrier employees, air carrier contractor employees, and air carrier subcontractor employees, concerning the joint Federal Aviation Administration (FAA)/Occupational Safety and Health Administration (OSHA) Whistleblower Protection Program. 03-25-2004
33-6 ANE-110 Weld Repair of Aluminum Crankcases and Cylinders of Piston Engines Provides information and guidance concerning acceptable means, but not the only means, for the development of process specifications for weld repairs on crankcases and cylinders of piston engines. 12-20-1994
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
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
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
91-72 AFS-820 Waivers of Provisions of Title 14 of the Code of Federal Regulations Part 91 Provides information concerning the submission of applications for the issuance of waivers of certain sections of Title 14 of the Code of Federal Regulations (14 CFR) part 91. 11-08-1996
61-91J AFS-800 WINGS - Pilot Proficiency Programs

 The objective of the WINGS Pilot Proficiency Program is to reduce the number of accidents in General Aviation (GA) by assisting airmen to find educational opportunities designed to help them apply the principles of risk assessment and risk management (RM). When properly applied, these principles will help mitigate accident causal factors associated with common pilot errors, lack of proficiency, and faulty knowledge. The Federal Aviation Administration’s (FAA) purpose is to encourage the majority of GA pilots, through WINGS, to engage in ongoing, targeted flying tasks and learning activities keyed to identified risks and which are designed to mitigate those risks. The FAA continually collects and assesses its databases to identify the risks associated with GA flying and incorporates risk mitigation strategies into initial and ongoing pilot education.

00-56B AFS-300 Voluntary Industry Distributor Accreditation Program


This advisory circular (AC) describes a system for accrediting civil aircraft parts distributors based on voluntary industry oversight. The AC also provides information for developing accreditation programs. We, the Federal Aviation Administration (FAA), strongly endorse participation in such a program to help certificated persons establish the eligibility of parts and products for installation on U.S. type-certificated (TC) products. We have revised this AC to meet current changes in regulatory requirements and industry practices since original publication. This AC is not mandatory and does not constitute a regulation. Any mandatory language used in this AC applies only to those who choose to voluntarily participate in this program; those who do choose to participate must follow the processes and procedures described in this AC in their entirety to be considered compliant with this program.

121-37 ADG-1 Voluntary Disclosure Reporting Program - Hazardous Materials Provides guidance for air operations and foreign air carriers when reporting to the FAA instances of noncompliance through the Voluntary Disclosure Reporting Program. 01-31-2006
00-58B AFS-230 Voluntary Disclosure Reporting Program 04-29-2009
43-204 AFS-350 Visual Inspection for Aircraft Provides technical information to persons conducting a visual inspection of aircraft. The procedures presented in this AC are an acceptable means, but not the only means, for conducting visual inspections and inspection programs. 08-14-1997
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
90-58C AFS-310 VOR Course Errors Resulting from 50 kHz Channel Mis-Selection Provides information concerning a potentially hazardous situation when a 200 channel VOR receiver is inadvertently mistuned by 50 kHz from the frequency of a 100 kHz ground station. 04-07-1975
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.

21-48 AIR-100 Using Electronic Modeling Systems as Primary Type Design Data

This AC provides information and guidance on developing procedures for using electronic modeling systems in design, manufacture, installation, and inspection processes.  It applies to applicants for Type Certificates (TCs), Amended Type Certificate (ATCs), Supplemental Type Certificates (STCs), Parts Manufacturer Approval (PMA), Technical Standard Order Authorizations (TSOA), major alterations, and major repairs.  In this AC, we explain how you can submit a proposal to use electronic modeling system data instead of (or in addition to) traditional paper format for the technical data required for initial and post certification activities.  We identify the minimum criteria for using electronic type design data, and include requirements for how to access and present the data.  In this AC, we define an “electronic modeling system” as a three?dimensional (3-D) modeling system.

 For Federal Aviation Administration (FAA) certification applicants, this AC mirrors our procedures in Order 8000.79, Use of Electronic Technology and Storage of Data, and Guide FAA-IR-01?01A, Aircraft Certification Guide for the Use of Electronic Technology and Alternative Methods of Storing Information. This AC must be used in conjunction with Order 8000.79 and Guide FAA-IR-01-01A.

 This AC is not mandatory and does not constitute a regulation.  We describe acceptable means, though it is not the only means, for using electronic modeling systems in design, manufacture, installation, and inspection processes.  If you use the means described in this AC, you must follow it in its entirety

90-108 AFS-400 Use of suitable Area navigation (RNAV) system on Conventional Routes and Procedures - Change 1

This advisory circular (AC) provides operational and airworthiness guidance regrading the suitablity and use of RNAV systems while operating on or transitioning to, conventional i.e. non-RNAV, routes and procedures within the United States (US) National Airspace System (NAS).

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

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