AC 00-2.15, ADVISORY CIRCULAR CHECKLIST. This circular transmits the revised checklist of the Federal Aviation Administration’s (FAA) Advisory Circulars (AC's). It also lists certain other FAA publications sold by the Superintendent of Documents, U.S. Government Printing Office (GPO). This checklist is available via the Internet from the FAA home page. See Appendix 5 for access information.

AC NO: 150/5220-16C, AUTOMATED WEATHER OBSERVING SYSTEMS (AW0S) FOR NON-FEDERAL APPLICATIONS. This advisory circular (AC) contains the Federal Aviation Administration's (FAA) standard for non-Federal AWOS's. An AWOS is a computerized system that automatically measures one or more weather parameters, analyzes the data, prepares a weather observation that consists of the parameter(s) measured, and broadcasts the observation to the pilot using an integral very high frequency (VHF) radio or an existing navigational aid (NAVAID) which may provide long-line dissemination of the observations.

AC 150/5300-13, AIRPORT DESIGN (29 SEP 1989) [INCORPORATES CHANGES 1 THRU 13]., This Advisory Circular (AC) contains the Federal Aviation Administration's (FAA) standards and recommendations for airport design.

AC 150/5340-1J, ADVISORY CIRCULAR STANDARDS FOR AIRPORT MARKINGS (20 APR 2005)., This advisory circular (AC) contains the Federal Aviation Administration (FAA) standards for markings used on airport runways, taxiways, and aprons.

AC 150/5345-55A, ADVISORY CIRCULAR, SPECIFICATION FOR L-893, LIGHTED VISUAL AID TO INDICATE TEMPORARY RUNWAY CLOSURE (27 JUN 2007)., This advisory circular (AC) provides guidance in the design of a lighted visual aid to indicate temporary runway closure.

AC 20-143, INSTALLATION, INSPECTION, AND MAINTENANCE OF CONTROLS FOR GENERAL AVIATION RECIPROCATING AIRCRAFT ENGINES. A review of service history on engine control installations indicates that a significant percentage of the problems are related to maintenance. Of the control system problems related to maintenance, approximately 75 percent of the problems with these systems result from lack of proper maintenance of airplane manufacturer installed engine controls. The other 25 percent of the service problems originate from a lack of maintenance of the engine manufacturers’ throttle, mixture, and propeller governor levers/linkages. Most airplane or engine maintenance manuals lack detailed information on inspection and installation of engine controls. Therefore, this advisory circular (AC) presents information regarding the inspection, maintenance, and installation of engine controls with emphasis on the airframe portion of these systems. It provides guidance to design and maintenance personnel to reduce the number of airplane accidents and incidents related to the loss of engine power control. This material is neither mandatory nor regulatory in nature and does not constitute a regulation. This AC is provided to supplement, but not replace the procedures in the manufacturers' maintenance manuals. Where the content of this AC differs from, or conflicts with, the manufacturer's maintenance manual, instructions contained in the manufacturer's manual take precedence over the guidelines provided in this AC.

AC NO: 20-156,AVIATION DATABUS ASSURANCE (AUG, 2006). This advisory circular (AC) is for aircraft and aircraft engine manufacturers and designers. We provide a means to gain Federal Aviation Administration (FAA) approval of your aviation databus by showing the databus design performs its intended function and satisfies the applicable airworthiness requirements when installed on an aircraft or aircraft engine. b. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but is not the only means, to gain databus certification. However, if you use the means described, you must follow it in all important respects. Aircraft, engine and avionics manufacturers want to take advantage of commercially available databus technology that would reduce aircraft weight and development/manufacturing time, and increase airborne system performance. This desire motivates manufacturers to consider replacing point-to-point wiring and uni-directional databuses (for example, ARINC 429 databus) with faster and lighter bi-directional databuses. The guidance in this AC is intended for new type certificate or major changes of aircraft installations with highly-integrated and complex databus technology. It is not intended for systems with previously approved or legacy databus technology unless the databus is used in a significant different way. You can use alternate methods to ensure that the databus performs its intended function and meets airworthiness requirements when installed on an aircraft or aircraft engine. Coordinate your plans for alternate methods with us early in the certification project.

This advisory circular (AC) shows you how to develop and use a reliability assessment plan. An assessment plan documents the controlled, repeatable processes for assessing the reliability of aircraft and engine electronic and electrical systems, including their electromechanical elements and equipment.

AC 20-27E, ADVISORY CIRCULAR CERTIFICATION AND OEPRATION OF AMATEUR-BUILT AIRCRAFT. This advisory circular (AC) contains information and guidance on the fabrication and assembly, airworthiness certification, and operation of amateur-built aircraft of all types; explains the amount of fabrication and assembly the builder must accomplish for the aircraft to be eligible for amateur-built certification; and describes the role of the Federal Aviation Administration (FAA) in the certification process. The information contained herein sets forth an acceptable means, but not the only means, for compliance with the applicable sections of Title 14 Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Parts (part 21).

AC 20-37E, ADVISORY CIRCULAR AIRCRAFT PROPELLER MAINTENANCE. This advisory circular (AC) provides information and describes maintenance procedures for owners, operators, and Federal Aviation Administration (FAA)-certificated maintenance personnel during the service life of aircraft propellers. It further recommends minimum requirements for propeller field maintenance and provides a checklist for propeller annual inspection.

AC 20-53A, Protection of Aircraft Fuel Systems Against Fuel Vapor Ignition Due to Lightning (04/12/1985)., This Advisory Circular provides guidance for a means of showing compliance with regulations for protection against lightning fuel vapor ignition hazards to airplane fuel systems of conventional design as well as for those involving advanced composite structures or other new technologies.

his advisory circular (AC) provides an acceptable means, but not the only means, to show compliance with the quality assurance requirements of Federal Aviation Regulations (FAR) Part 21, Certification Procedures for Products and Parts, as applicable to the production of software used in type certificated aircraft or related products (airborne software). This AC also provides supplemental guidance for the establishment of a quality control or inspection ystem to control the development and production of software used in type certifcation aircraft. It supplements AC 21-1, Production Certificates; AC 21-6, Production Under Type Certificate Only; AC 21-20, Supplier Surveillance Procedures; AC 20-115, Radio Technical Commission for Aeronautics Document RTCA/DO-178, and AC 21-303.1, Certification Procedures for Products and Parts.

C 21-38, DISPOSITION OF UNSALVAGEABLE AIRCRAFT PARTS AND MATERIALS. This advisory circular (AC) provides information and guidance to persons involved in the sale, maintenance, or disposal of aircraft parts. It provides information and guidance to prevent unsalvageable aircraft parts and materials from being sold as serviceable parts and materials. It provides one means, but not the only means, of complying with 14 CFR Part 21, Certification Procedures for Products and Parts, requirements for control of rejected parts and materials.

AC 23-13A, FATIGUE, FAIL-SAFE, AND DAMAGE TOLERANCE EVALUATION OF METALLIC STRUCTURE FOR NORMAL, UTILITY, ACROBATIC, AND COMMUTER CATEGORY AIRPLANES. This Advisory Circular (AC) sets forth an acceptable means of showing compliance with Title 14 Code of Federal Regulations (14 CFR), part 23. This guidance is applicable to fatigue, fail-safe, and damage tolerance evaluations of metallic structure in normal, utility, acrobatic, and commuter category airplanes. This AC provides information on approval of continued operational flight with known cracks in the structure of small airplanes, regardless of certification basis. This AC also clarifies the use of AC 20-128A in the evaluation of rotorburst structural hazards in small airplanes. Finally, this AC consolidates existing policy documents and certain technical reports into one document

AC 23.1419-2B, ADVISORY CIRCULAR CERTIFICATION OF PART 23 AIRPLANES FOR FLIGHT IN ICING CONDITIONS (26 SEP 2002)., This advisory circular (AC) sets forth an acceptable means, but not the only means, of demonstrating compliance with the ice protection requirements in Title 14 of the Code of Federal Regulations (14 CFR) part 23. The Federal Aviation Administration (FAA) will consider other methods of demonstrating compliance that an applicant may elect to present. This material is neither mandatory nor regulatory in nature and does not constitute a regulation.

AC 23.1419-2D, ADVISORY CIRCULAR CERTIFICATION OF PART 23 AIRPLANES FOR FLIGHT IN ICING CONDITIONS (19 APR 2007)., This Advisory Circular (AC) sets forth an acceptable means, but not the only means, of demonstrating compliance with the ice protection requirements in Title 14 of the Code of Federal Regulations (14 CFR) part 23. The Federal Aviation Administration (FAA) will consider other methods of demonstrating compliance that an applicant may elect to present. This material is neither mandatory nor regulatory in nature and does not constitute a regulation.

AC 23.607-1, SELF-LOCKING NUTS ON BOLTS SUBJECT TO ROTATION. this advisory circular provides information and guidance concerning acceptable means, but not the only means, of compliance with Part 3 of the Civil Air Regulations (CAR) and with Part 23 of the Federal Aviation Regulations (FAR) applicable to self-locking nuts used on bolts subject to rotation in operation.

AC NO: 25-22, ADVISORY CIRCULAR CERTIFICATION OF TRANSPORT CATEGORY AIRPLANE MECHANICAL SYSTEMS (MAR 00). This advisory circular (AC) provides methods acceptable to the Administrator for showing compliance with the type certification requirements for transport airplane mechanical systems and equipment installations. This AC is intended to provide guidance to airplane manufacturers, modifiers, foreign regulatory authorities, Federal Aviation Administration (FAA) transport airplane type certification engineers and their designees. The methods and procedures described herein have evolved over many years and represent current certification practice. Like all advisory material, these guidelines are not mandatory and do not constitute regulations. They are derived from previous FAA experience in finding compliance with the airworthiness requirements and represent methods and procedures found to be acceptable by that experience. Although mandatory terms such as “shall” and “must” are used in this AC, because the AC method of compliance is not in itself mandatory, these terms apply only to applicants who seek to demonstrate compliance by use of the specific method described in this AC.

AC 25-26, DEVELOPMENT OF STANDARD WIRING PRACTICES DOCUMENTATION. This advisory circular (AC) provides guidance for developing an electrical system standard wiring practices document for air carriers, air operators, holders of type certificates (TC), holders of supplemental type certificates (STC), maintenance providers, and repair stations. This AC provides a means, but not the only means, to create a document that complies with the requirements of section H25.5(a)(2) of appendix H to Title 14 Code of Federal Regulations (14 CFR) part 25.

AC 25.571-1C, DAMAGE TOLERANCE AND FATIGUE EVALUATION OF STRUCTURES (29 APR 1998)., This advisory circular provides guidance for compliance with the provisions of 14 CFR Part 25 of the Federal Aviation Regulations (FAR) pertaining to the damage-tolerance and fatigue evaluation requirements for transport category aircraft structure.

AC 25.613-1, MATERIAL STRENGTH PROPERTIES AND MATERIAL DESIGN VALUES (6 AUG 2003). This advisory circular (AC) provides guidance for demonstrating compliance with the airworthiness standards that specify the requirements for material strength properties and material design values. This guidance is applicable to transport category airplanes for which a new, amended, or supplemental type certificate is requested.

AC 43-11, RECIPROCATING ENGINE OVERHAUL, TERMINOLOGY AND STANDARDS. This advisory circular discusses engine overhaul terminology and standards that are being used in the aviation industry: a. To inform the owner or operator of the variety of terms used to describe types of reciprocating engine overhaul. b. To clarify the standards used by the industry during reciprocating engine overhaul. c. To review the Federal Aviation Regulations (FAR) regarding engine records and standards.

AC 43-12A, PREVENTIVE MAINTENANCE. This advisory circular (AC) provides information concerning preventive maintenance, who may perform it, the standards of performance applicable to it, authority for approving aircraft for return to service, and the applicable recording requirements. This AC also clarifies those areas most frequently misunderstood in the past, and explains the recent changes in the rules concerning preventive maintenance.

AC 43-15, RECOMMENDED GUIDELINES FOR INSTRUMENT SHOPS . This Advisory Circular provides guidelines concerning environ- mental conditions for instrument repair and overhaul shops and information regarding calibration of test equipment.

AC 43.13-1B, ACCEPTABLE METHODS, TECHNIQUES, AND PRACTICES  AIRCRAFT INSPECTION AND REPAIR. This advisory circular (AC) contains methods, techniques, and practices acceptable to the Administrator for the inspection and repair of nonpressurized areas of civil aircraft, only when there are no manufacturer repair or maintenance instructions. This data generally pertains to minor repairs. The repairs identified in this AC may also be used as a basis for FAA approval for major repairs. The repair data may also be used as approved data, and the AC chapter, page, and paragraph listed in block 8 of FAA form 337 when: a. the user has determined that it is appropriate to the product being repaired; b. it is directly applicable to the repair being made; and c. it is not contrary to manufacturer’s data.

AC 43.9-1E, INSTRUCTIONS FOR COMPLETION OF FAA FORM 337 (OMB NO. 2120-0020), MAJOR REPAIR AND ALTERATION (AIRFRAME POWERPLANT, PROPELLER, OR APPLIANCE. This advisory circular (AC) provides instructions for completing Federal Aviation Administration (FAA) Form 337, Major Repair and Alteration (Airframe, Powerplant, Propeller, or Appliance).

AC 61-65D, ADVISORY CIRCULAR CERTIFICATION: PILOTS AND FLIGHT AND GROUND INSTRUCTORS (20 SEP 1999)., This advisory circular (AC) provides guidance for pilots, flight instructors, ground examiners on the certification standards, knowledge test procedures, and other requirements contained in Title 14 of the Code of Federal Regulations (14 CFR) part 61.

AC 61-67C, STALL AND SPIN AWARENESS TRAINING (25 SEP 2000)., This advisory circular (AC) explains the stall and spin awareness training required under Title 14 of the Code of Federal Regulations (14 CFR) part 61 and offers guidance to flight instructors who provide that training. In addition, this AC informs pilots of the airworthiness standards for the type certification of normal, utility, and acrobatic category airplanes prescribed in 14 CFR part 23, section 23.221, concerning spin maneuvers, and it emphasizes the importance of observing restrictions that prohibit the intentional spinning of certain airplanes.

AC 90-89A, ADVISORY CIRCULAR AMATEUR-BUILT AIRCRAFT AND ULTRALIGHT FLIGHT TESTING HANDBOOK (24 MAY 1995). This advisory circular (AC) sets forth suggestions and safety related recommendations to assist amateur and ultralight builders in developing individualized aircraft flight test plans.

AC 91-48, Aerobatics - Precision Flying With A Purpose. This advisory circular provides information to persons who are interested in acrobatics to improve their piloting skills as recreation, sport, or as a competitive activity. It also discusses Federal Aviation Regulations (FAR) pertaining to acrobatic aircraft airworthiness. considerations, acrobatic instruction, operations, and acrobatic flight safety.

AC NO. 91-60, THE CONTINUED AIRWORTHINESS OF OLDER AIRPLANES. This advisory circular (AC) provides information and recommendations to manufacturers and airplane m&operators for the development and use of programs to assure the continued airworthiness of older airplanes not covered under AC 91-56, Supplemental Structural Inspection Program for Large Transport Category Airplanes. 2 l BACKGROUND l Airplanes

AC 91-61, A HAZARD IN AEROBATICS: EFFECTS OF G-FORCES ON PILOTS. This circular provides background information on G's, their effects on the human body, and their role in safe flying. Suggestions are offered for avoiding problems caused by accelerations encountered in aerobatic maneuvers.