(2)[ All operators, other than private aircraft owners, shall operate under an approved maintenance system providing a basis of operation under a delegated system of airworthiness control for the safety of their aircraft and persons they carry on board the aircraft. For grant or issue of approval for operation under the approved maintenance system and its continued validity, the operators shall comply with the requirements as specified by the Director-General.] [Substituted by G.S.R. 413(E), dated 4.8.2001.]