(1) No owner or operator of an aircraft shall operate—
(a) a South African registered aircraft without holding a valid certificate of release to service signed by the holder of an appropriately rated AME licence or AMO approval; or
(b) a foreign aircraft without holding a valid certificate, equivalent to the certificate referred to in paragraph (a), issued by an appropriate authority.
(2) The owner or operator shall—
(a) ensure that one copy of the certificate of release to service or equivalent certificate is carried on board the aircraft to which it relates and, in the case of a South African registered aircraft, a second copy shall be filed at the normal station of the aircraft; and
(b) retain the certificate of release to service for a period of 12 months calculated from the date of issue of such certificate of release to service.