(3)[(a) An operator shall provide, for the use and guidance of its personnel, manuals which shall contain details of information concerning policies, procedures, practices and quality control methods relating to activities of that operator and containing such further information as may be specified by the Director-General.(b)A complete copy of the manual or such portions of the manual as the Director-General may direct shall be submitted to the appropriate regional office of the Civil Aviation Department for approval.(c)An approved operator shall revise manuals from time to time and whenever found necessary as a result of changes in its operations, aircraft equipment or practices or experience with the existing aircraft, equipment or practices. Any revision of practices and procedures which affect the airworthiness or safety of the aircraft or equipment shall be subject to the prior approval of the Director-General.