14 C.F.R. § 21.43 Location of manufacturing facilities.
Title 14 - Aeronautics and Space
Except as provided in §21.29, the Administrator does not issue a type certificate if the manufacturing facilities for the product are located outside of the United States, unless the Administrator finds that the location of the manufacturer's facilities places no undue burden on the FAA in administering applicable airworthiness requirements.
Title 14: Aeronautics and Space
PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS
Subpart B—Type Certificates
§ 21.43 Location of manufacturing facilities.