Sec. 21.45 - Privileges.
The holder or licensee of a type certificate for a product may --
(a) In the case of aircraft, upon compliance with §§21.173 through 21.189, obtain airworthiness certificates;
(b) In the case of aircraft engines or propellers, obtain approval for installation or certified aircraft;
(c) In the case of any product, upon compliance with §§21.133 through 21.163, obtain a production certificate for the type certificated product;
(d) Obtain approval of replacement parts for that product.