COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Pratt and Whitney Turbine Engines - JT9D Series AD/JT9D/9 Fifth Stage Turbine Hubs - Reduction of Cyclic Life 4/77 Applicability: JT9D-3A, -7, -7A, -7H, -7AH, -7F and -30 engines containing fifth stage turbine hubs P/N 704705, 714905, 718905, 719205 and 726805. Document: 1. FAA AD 77-01-07 : Amendment 39-2807; or 2. AD/PW-T/41. Compliance: As per the Requirement Document.