COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 106 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Teledyne Continental Motors Piston Engines AD/CON/53 Amdt 1 Starter Adaptor Shafts 12/88 Applicability: IO-520BA, IO-520BB, IO-550B, TSIO-520BE, TSIO-520LB, TSIO-520UB, TSIO- 520WB engines fitted with a starter adaptor shaft driving a freon compressor. Requirement: Part 1 Action in accordance with TCM SB M87-24. Note: FAA AD 88-17-03 Amdt 39-5943 Para (a) refers. Part 2 Replace starter drive assy in accordance with (IAW) TCM SB M88-5 and drive belt IAW TCM SB M88-6. Note: FAA AD 88-17-03 Amdt 39-5943 Para (b) refers. Compliance: For Part 1 Before further flight after 1 February 1988. For Part 2 Prior to refitment of compressor drive belt and reactivation of airconditioning system. Note: Compliance with CAO 106 AD/CON/50 does not constitute compliance with this Directive. Background: This Directive is amended to reflect and reference FAA AD 88-17-03 Amdt 39-5943 which supersedes FAA AD 87-26-01 Amdt 39-5882.