14 C.F.R. § 21.153 Amendment of the production certificates.
Title 14 - Aeronautics and Space
The holder of a production certificate desiring to amend it to add a type certificate or model, or both, must apply therefor in a form and manner prescribed by the Administrator. The applicant must comply with the applicable requirements of §§21.139, 21.143, and 21.147.
Title 14: Aeronautics and Space
PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS
Subpart G—Production Certificates
§ 21.153 Amendment of the production certificates.