COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Pratt and Whitney Turbine Engines - JT8D Series AD/JT8D/11 First Stage Fan Hubs 4/77 Applicability: All JT8D-1, -1A, -1B, -7, -7A and -7B engines fitted with front compressor front hub P/N 504101 with S/Nos. listed in Table 1 of PWA Alert SB No. 4661 which have accumulated 6000 cycles or more in service. Document: 1. FAA AD 77-03-06 : Amendment 39-2828; or 2. AD/PW-T/42. Compliance: As detailed in the Requirement Document.