COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Fairchild (Swearingen) SA226 and SA227 Series Aeroplanes AD/SWSA226/23 Fuel and Hyraulic Lines Inspection 11/76 Applicability: All SA-226 series not incorporating Swearingen SB No. 54-003. Document: Swearingen SB 54-002. Compliance: Within 50 hours time in service after 28 October 1976 and thereafter at intervals not exceeding 50 hours time in service.