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/14 Low Pressure Impeller - Inspection 11/87 Applicability: All Dart RDa-6, RDa-7 series engines. Requirement: 1. Action in accordance with Rolls Royce SB Da 72-A445 Rev 5; or 2. AD/RRT/27E. Compliance: As detailed in Requirement Document. Background: Reissue of AD/RRT/27E.