(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.

This AC provides information and guidance on developing procedures for using electronic modeling systems in design, manufacture, installation, and inspection processes.

This advisory circular (AC) provides information, clarification, and procedural guidance for the approval and installation of modified technical standard order (TSO)approved seating systems in U.S. type-certificated aircraft.

This advisory circular (AC) explains how you can use the new provision in Title 14 of the Code of Federal Regulations (14 CFR) §§ 21.1(a)(3), 21.8, 21.9(a)(4), and 21.50(c) for commercial parts.

This AC is not mandatory and does not constitute a regulation.

This AC provides information for PAHs in accordance with the regulations cited in Title 14 of the Code of Federal Regulations (14 CFR) part 21, Certification Procedures for Products and Articles. For the purposes of this AC, manufacturing facilities includes production certificate (PC) extensions, associate facilities, and suppliers located outside the United States.

This advisory circular (AC) provides guidance for the application ofthe "Changed Product Rule (CPR)," pursuant to Title 14 ofthe Code ofFederal Regulations (14 CFR) 21.101, Designation ofapplicable regulations, and 21.19, Changes requiring a new type certificate, for changes made to type certificated aeronautical products.

This advisory circular (AC) provides guidance on how to show compliance with Title 14 of the Code of Federal regulations (14 CFR) part 21, 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.