14 CFR 21.51 : Aeronautics And Space (§ 1.1 To Parts 1311-1399) — (§ 1.1 To Parts 50-59) — Federal Aviation Administration, Department Of Transportation (§ 1.1 To Parts 50-59) — Aircraft (§ 21.1 To Parts 50-59) — Certification Procedures For Products And Articles (§ 21.1 To § 21.700) — Type Certificates (§ 21.11 To § 21.55) — Duration.
4 Aug 2016
A type certificate is effective until surrendered, suspended, revoked, or a termination date is otherwise established by the FAA.