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Advisory Circulars (ACs)

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Advisory Circulars (ACs) search results
Number Title Status Office Date
21-46A Technical Standard Order Program

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).

 Active AIR-100 2017-02-23