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/10 Eighth Stage Compressor Disc P/N 496908 - Removal from Service 3/77 Applicability: JT8D-1, -1A, -1B, -7, -7A, -7B, -9, -9A and -11 engines containing eighth stage compressor disc P/N 496908. Document: 1. FAA AD 76-24-01 : Amendment 39-2775; or 2. AD/PW-T/40. Compliance: Prior to Reaching 6000 cycles in service, or by June 30, 1977 whichever comes later.