Commonwealth Consolidated Regulations Commonwealth Consolidated Regulations(1) The person responsible for continuing airworthiness for an aircraft may apply to CASA for approval of a proposed variation of the approved maintenance program for the aircraft.
(2) The person responsible for continuing airworthiness for an aircraft must apply to CASA for approval of a proposed variation of the approved maintenance program for the aircraft if:
(a) the program, as varied by the proposed variation, would not comply with the requirements in the instructions for continuing airworthiness for the aircraft, or for an aeronautical product fitted to the aircraft, that relate to maintenance that is required by the instructions to be carried out on a regular basis; or
(b) the person responsible for continuing airworthiness for the aircraft is a continuing airworthiness management organisation, but its approval under Subpart 42.G does not permit it to approve variations of maintenance programs under Division 42.J.4.