IRImplementing rule
21.A.118BDuration and continued validity
(a)A supplemental type-certificate shall be issued for an unlimited duration. It shall remain valid subject to:
1.the holder remaining in compliance with this Annex I (Part 21); and
2.the certificate not being surrendered or revoked under the applicable administrative procedures established by the Agency.
(b)Upon surrender or revocation, the supplemental type-certificate shall be returned to the Agency.
IR · 21.A.118B — Regulation (EU) No 748/2012 · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025