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) 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) 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 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.

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) contains information and guidance to production approval holders (PAH) located in the United States requesting Federal Aviation Administration (FAA) approval to use manufacturing facilities located outside of the United States.

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.

a. This advisory circular (AC) identifies RTCA Document No.

This advisory circular (AC) explains the Technical Standard Order (TSO) process outlined in Title 14 of the Code of Federal Regulations (14 CFR) part 21, subpart O, for manufacturers producing articles under a TSO authorization (TSOA) or letter of design approval (LODA).