Duration of certificates.
(a) An aviation maintenance technician school certificate or rating is effective until it is surrendered, suspended, or revoked.
(b) The holder of a certificate that is surrendered, suspended, or revoked, shall return it to the Administrator.
[Doc. No. 1157, 27 FR 6669, July 19, 1962, as amended by Amdt. 147-3, 41 FR 47230, Oct. 28, 1976]