14 C.F.R. § 21.621 Transferability and duration.
Title 14 - Aeronautics and Space
A TSO authorization or letter of TSO design approval issued under this part is not transferable and is effective until surrendered, withdrawn, or otherwise terminated by the Administrator.
Title 14: Aeronautics and Space
PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS
Subpart O—Technical Standard Order Authorizations
§ 21.621 Transferability and duration.
