Validity of Certificate of Competency
11.—(1)  All Certificates of Competency issued shall be in accordance with the Radio Regulations and shall be valid so long as the International Telecommunication Convention remains in force.
(2)  Where the International Telecommunication Convention is terminated by a subsequent Convention relating to radio-communications to which the Government of Singapore is a party or ceases to apply to Singapore due to any other cause, the Certificate of Competency shall become invalid without notice to the holder of the Certificate, in which case the Certificate shall be returned to the Authority.
(3)  Notwithstanding paragraph (2), upon the return of the Certificate of Competency, the Authority may, in its discretion, revalidate the Certificate.