COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 727 Series Aeroplanes AD/B727/83 Mid-Cabin Galley Door Evacuation Slide - Inspection 1/79 Applicability: All 727-100 series. Document: 1. FAA AD 78-24-05 Amdt. 39-3355; or 2. Boeing SB No. 727-25-A247. Compliance: Unless already accomplished, initially inspect within 300 hours time in service after 15 December 1978 and thereafter at intervals not exceeding 1500 hours time in service.