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Number Office Title Date
21-4B AIR-200 Special Flight Permits for Operation of Overweight Aircraft Furnishes guidance concerning special flight permits necessary to operate an aircraft in excess of its usual maximum certificated takeoff weight. 07-30-1969
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
21-13 AIR-200 Standard Airworthiness Certification of Surplus Military Aircraft and Aircraft Built from Spare and Surplus Parts 04-05-1973
21-16G AIR-100 RTCA Document DO-160 versions D, E and F, “Environmental Conditions and Test Procedures for Airborne Equipment”

a. This advisory circular (AC) identifies RTCA Document No. (RTCA/DO)-160 versions D, E, F, and G, Environmental Conditions and Test Procedures for Airborne Equipment, dated July 27, 1997, December 20, 2005, December 6, 2007, and December 8, 2010, respectively, as containing acceptable environmental qualifications to show compliance with certain airworthiness requirements. The FAA strongly encourages the use of RTCA/DO-160G for new articles.

b. Appendix 1 of this AC provides a summary of the changes from RTCA/DO-160C to RTCA/DO-160D, version D to E, version E to F, and F to G. The information in the table will assist you in determining if a particular version of RTCA/DO-160 is acceptable.

06-22-2011
21-17 AIR-200 Carriage of Cargo in Restricted Category Aircraft and Other Special Purpose Operations 05-31-1982
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
21-19A AIR-200 Installation of Used Aircraft Engines in New Production Aircraft 07-02-2003
21-21 AIR-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. 08-24-1984
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
21-23B AIR-40 Airworthiness Certification of Civil Aircraft, Engine, Propellers, and Related Products Imported to the United States Provides information on the Federal Aviation Administration’s (FAA) objectives, regulations, and general practices for the United States of America airworthiness certification or acceptance of civil aeronautical products imported to the U.S. 11-17-2004
21-25A AIR-120 Approval of Modified Seats and Berths Provides information on approvals required for modifications to TSO’d seating systems. This revision incorporates guidance regarding TSO-C127 seating systems and additional information on marking and flammability testing requirements. 06-03-1997
21-26 AIR-200 Quality Control for the Manufacture of Composite Structures (Consolidated reprint includes Change 1)

Provides information and guidance concerning and acceptable means, but not the only means, of demonstrating compliance with the requirements of FAR Part 21, Certification Procedures for Products and Parts, regarding quality control (QC) systems for the manufacture of composite structures involving fiber reinforced materials, e.g., carbon (graphite), boron, aramid (Kevlar), and glass reinforced polymeric materials. Provides guidance regarding the essential features of QC systems for composites as mentioned in AC 20-107.

06-26-1989
21-28 AIR-220 Airworthiness Certification of U.S.-Produced Aircraft and Engine Kits Assembled Outside the United States Provides information and guidance concerning airworthiness certification requirements for aircraft or aircraft engines, assembled from kits by aircraft or aircraft engine manufacturers located in other countries. 06-20-1990
21-29C AFS-350 Detecting and Reporting Suspected Unapproved Parts Including Changes 1 and 2

 This advisory circular (AC) provides updated information and guidance to the aviation community for detecting suspected unapproved parts (SUP) and reporting them to the Federal Aviation Administration (FAA). Appendix 1 contains FAA Form 8120-11, Suspected Unapproved Parts Reports, which serves as a standardized means of reporting.

07-22-2008
21-31 AIR-220 Quality Control for the Manufacture of Non-Metallic Compartment Interior Components Provides information and guidance concerning compliance with the requirements of Federal Aviation Regulations (FAR) Part 21, Certification Procedures for Products and Parts. 11-15-1991
21-34 AIR-120 Shoulder Harness-Safety Belt Installations Provides information and guidance pertinent to an acceptable means, but not the only means, for installation of shoulder harness and safety belt restraint systems at all seat locations on all previously type-certificated aircraft. 06-04-1993
21-37 AIR-110 Primary Category Aircraft Provides guidance for complying with Part 21 of Subchapter C, Chapter 1, Title 14 of the Code of Federal Regulations (CFR), which contains the certification procedures for products and parts. 06-14-1994
21-40A AIR-110 Guide for Obtaining a Supplemental Type Certificate Intended as a certification guide and checklist for obtaining a Supplemental Type Certificate (STC). Title 14 of the Code of Federal Regulations (14 CFR) and Federal Aviation Administration (FAA) Directives (orders and notices) are the final authority and take precedence over this document. 09-27-2007
21-41A AIR-110 Replacing MIL-S-8879C With SAE AS8879 Provides information, clarification, and procedural guidance concerning the Inactivation of MIL-S-8879Cm Screw Threads, Controlled Radius Root with Increased Minor Diameter, as it relates to the civil aviation industry. 06-20-2003
21-43 AIR-200 Issuance of Production Approvals Under Subparts G, K, & O

This advisory circular (AC) provides information for production approval holders (PAH) under Title 14, Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products, Articles, and Parts. This AC guides PAHs in developing and maintaining quality systems for the products and articles they produce. This guidance aids the applicant for a production approval or current PAH in developing a quality system that both meets the needs of the PAH and is compliant with the regulations. You can find this AC at http://www.faa.gov/regulations_policies/advisory_circulars/.

10-16-2009
21-44 AIR-200 Issuance of Export Airworthiness Approvals Under 14 CFR Part 21 Subpart L

This advisory circular (AC) provides information about Title 14, Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products, Articles, and Parts. The AC covers subpart L, Export Airworthiness Approvals. This AC is not mandatory and does not constitute a regulation. This AC describes an acceptable means, but not the only means, to comply with these requirements. However, if you use the means described in the AC, you must follow it in all important respects.

10-16-2009
21-47 AIR-100 Submittal Of Data To An ACO, A DER Or An ODA For A Major Repair Or Major Alteration

This advisory circular (AC) provides guidance for creating a complete data package when data is submitted to a Federal Aviation Administration (FAA), aircraft certification office (ACO) or to FAA designees, to support a major repair or major alteration.

09-29-2010
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

10-29-2010
21-51 AIR-110 Applicant’s Showing of Compliance and Certifying Statement of Compliance

We, the Federal Aviation Administration (FAA), wrote this advisory circular (AC) to describe how to comply with the requirements of Title 14 of the Code of Federal Regulations (14 CFR) 21.20, 21.97 and 21.303(a)(5). 
 This AC is not mandatory and is not a regulation.  This AC describes an acceptable means, but not the only means, to comply with the requirements 14 CFR 21.20, 21.97 and 21.303(a)(5).  However, if you use the means described in this AC, you must follow it entirely

09-27-2011
21.17-1A ACE-100 Type Certification-Airships Describes two acceptable criteria for the type certification of airships that may be used by an applicant in showing compliance with section 21.17(b) of the Federal Aviation Regulations (FAR),Part 21. General guidance relative to airship type certification is also provided. 09-25-1992
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