COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Rolls Royce Turbine Engines - Dart Series AD/DART/7 Aeroquip Fuel Pipes - Mod. 1587 11/87 Applicability: All Dart RDa-6, RDa-7 series engines. Requirement: 1. Action in accordance with Rolls Royce SB Da 73-73; or 2. AD/RRT/18. Effectivity: Forthwith. Background: Reissue of AD/RRT/18.