14 C.F.R. § 21.475 Experimental certificates.
Title 14 - Aeronautics and Space
The DAS shall, before issuing an experimental certificate, obtain from the Administrator any limitations and conditions that the Administrator considers necessary for safety.
Title 14: Aeronautics and Space
PART 21—CERTIFICATION PROCEDURES FOR PRODUCTS AND PARTS
Subpart M—Designated Alteration Station Authorization Procedures
§ 21.475 Experimental certificates.