|20-100||AIR-120||General Guidelines for Measuring Fire-Extinguishing Agent Concentrations in Powerplant Compartments Describes the installation and use of a model GA-2A fire extinguisher agent concentration recorder in determining the distribution and concentration of fire-extinguishing agents when discharged in an aircraft powerplant compartment.||09-21-1977|
|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|
Flammability Testing of Aircraft Cabin Interior Panels After Alterations
This advisory circular (AC) describes acceptable methods to test aircraft cabin interior materials when new finishes are used on existing aircraft cabin interior panels, typically performed on supplemental type certificates (STC) or major alterations. This AC applies to materials for self-extinguishing flammability only. This AC does not apply to materials that must meet heat release or smoke emissions,standards established by Title 14 of the Code of Federal Regulations (14 CFR) part 25, Amendment 25-61, and 14 CFR part 121, Amendment 121-289. We, the Federal Aviation Administration (FAA), have written this AC for applicants, offering several methods for demonstrating compliance that may be more cost-effective and less time-consuming than current methods.
|20-47||ANM-100||Exterior Colored Band around Exits on Transport Airplanes Sets forth an acceptable means, but not the only means, of complying with the requirement for a 2-inch colored band outlining exits required to be openable from the outside on transport airplanes.||02-08-1966|
|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|
Eligibility, Quality, & Identification of Aeronautical Replacement Parts
This advisory circular (AC) provides information and guidance for use in determining the quality, eligibility and traceability of aeronautical parts and materials intended for installation on U.S. type-certificated (TC) products and articles, and to enable compliance with the applicable regulations.
Eligibility and Evaluation of U.S. Military Surplus Flight Safety Aircraft Parts, Engines, and Propellers
This advisory circular (AC) provides information and guidance for use in evaluating and determining the eligibility of U.S. military surplus flight safety critical aircraft parts (FSCAP), engines, and propellers for installation on Federal Aviation Administration (FAA) type-certificated products. This AC is applicable to all U.S. military surplus FSCAP, engines, and propellers, irrespective of when and by what process these products or parts became available. In the absence of FSCAP classification of military surplus parts by the Department of Defense (DoD), such parts should be identified and classified as FSCAP using the guidance contained in this AC. For information and guidance on determining the eligibility of parts other than FSCAP, refer to AC 20-62, Eligibility, Quality, and Identification of Aeronautical Replacement Parts. Like all AC material, this AC is not mandatory and does not constitute a regulation. It is issued for guidance purposes and to outline one method of compliance with the rules. In lieu of following the method(s) prescribed herein without deviation, a person may elect to follow an alternative method, provided the FAA finds the alternative method to be an acceptable means of complying with the applicable requirements of Title 14 of the Code of Federal Regulations (14 CFR).
|20-71||AIR-120||Dual Locking Devices on Fasteners Provides guidance and acceptable means, not the sole means, by which compliance may be shown with the requirements for dual locking devices on removable fasteners installed in rotorcraft and transport category airplanes.||12-08-1970|
|20-163||AIR-100||Displaying Geometric Altitude Relative to Mean Sea Level a. This advisory circular (AC) shows you how to gain a type certificate (TC), supplemental TC (STC), amended TC (ATC), amended supplemental TC (ASTC), or technical standard order (TSO) authorization for systems incorporating the presentation of geometric altitude relative to mean sea level (MSL) on electronic displays. b. This AC is not mandatory and does not constitute a regulation. In it, we describe an acceptable means, though it is not the only means, to gain approval. If you use the means described, you must follow it in all important respects.||07-09-2009|
|20-94A||AFS-350||Digital Clock Installation in Aircraft||04-13-2007|
Development of Civil Aircraft and Systems
This advisory circular (AC) recognizes the Society of Automotive Engineers (SAE) Aerospace Recommended Practice (ARP) 4754A, Guidelines for Development of Civil Aircraft and Systems, dated December 21, 2010, as an acceptable method for establishing a development assurance process. SAE ARP 4754A discusses the development of aircraft and systems taking into account the overall aircraft operating environment and functions. This includes validation of requirements and verification of the design implementation for certification and process assurance.
Designing and Demonstrating Aircraft Tolerance to Portable Electronic Devices
This advisory circular (AC) identifies RTCA, Inc., document DO-307, Aircraft Design and Certification for Portable Electronic Device (PED) Tolerance, dated October 11, 2007, and RTCA/DO-307, Change 1, dated December 16, 2008, as an acceptable means for designing and demonstrating aircraft tolerance to potential electromagnetic interference from portable electronic devices (PEDs).
This AC is not mandatory and does not constitute a regulation. In it, we describe an acceptable means, though not the only means, to demonstrate aircraft tolerance to PEDs
|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|
Controls for Flight Deck Systems
This advisory circular (AC) provides guidance for the installation and airworthiness approval of flight deck system control devices, from primarily a human factors perspective. It does not address primary flight controls, secondary flight controls, or controls that are not located in the flight deck. This AC addresses traditional dedicated controls such as physical switches and knobs, as well as multifunction controls such as touch screens and cursor control devices.
|20-69||AIR-120||Conspicuity of Aircraft Instrument Malfunction Indicators Provides design guidance information on methods of improving conspicuity of malfunction indication devices.||05-14-1970|
Composite Aircraft Structure
This AC sets forth an acceptable means, but not the only means of showing compliance with the provisions of Title 14 of the Code of Federal Regulations (14 CFR) parts 23, 25, 27, and 29 regarding airworthiness type certification requirements for composite aircraft structures involving fiber reinforced materials, e.g., carbon and glass fiber reinforced plastics. Guidance information is also presented on the closely related design, manufacturing, and maintenance aspects. The information contained herein is for guidance purposes and is not mandatory or regulatory in nature.
|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|
|20-133||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|
Certification and Operation of Amateur-Built Aircraft
This Advisory Circular (AC) provides information about Title 14, Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Parts, § 21.191(g) for the purpose of operating amateur-built aircraft.
Certification Guidance for Installation of Non-Essential, Non-Required Aircraft Cabin Systems & Equipment (CS&E)
This AC provides the primary certification guidance on how to meet the airworthiness requirements for installation of non-essential, non-required aircraft cabin systems & equipment (CS&E). We incorporate in this AC the guidance in RTCA, Inc. document RTCA/DO-313, Certification Guidance for Installation of Non-Essential, Non-Required Aircraft Cabin Systems & Equipment, dated October 2, 2008. We also clarify certain guidance in RTCA/DO-313. (See paragraph 6.)
This AC is not mandatory and does not constitute a regulation. In it we describe a means, though it is not the only means, for manufacturers and installers to show their equipment design and installation performs its intended function. If you use the means described in this AC, however, you should follow it in all respects.
|20-32B||ACE-110||Carbon Monoxide (CO) Contamination in Aircraft Detection and Prevention Provides information on the potential dangers of carbon monoxide contamination from faulty engine exhaust systems or cabin heaters of the exhaust gas heat exchanger type.||11-24-1972|
|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|
|20-156||AIR-100||Aviation Databus Assurance Provide a means to gain FAA approval of you aviation databus by showing the databus design performs it intended function and satisfies the applicable airworthiness requirements when install on an aircraft or aircraft engine||08-04-2006|
Approved Model List Supplemental Type Certificate (AML-STC)
This advisorycircular(AC)providesguidelines and requirements to obtain approved model list (AML)supplemental typecertificate(STC). This ACis not mandatoryand does not constitutearegulation. It describes anacceptablemethod, but not theonlymethod to obtain an AML-STC. You mayusean alternatemethod ifyou establish that it adequatelymeets therequirements. However, ifyou usethis ACto obtain approval,you must comply with all ofits provisions.
Approval of Propulsion Fuels, Additives, and Lubricating Oils
This advisory circular (AC) provides guidance applicable to adding fuels and oils as engine, aircraft, or auxiliary power unit (APU) operating limitations. It also provides guidance on fuel and lubricating oil specifications and standards, and on propulsion fuel and/or lubricating oil certification plans. This AC provides acceptable methods, but not the only methods, that may be used to approve aircraft, engines, or APUs to operate with specified propulsion fuels and lubricating oils.