COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace (Scottish Aviation) Twin Pioneer Series Aeroplanes AD/SA-TP/15 Axle Bracket and Sliding Tube Assemblies NK Applicability: All models fitted with undercarriage P/N 1705 S/Nos. 1 to 36. Document: Scottish Aviation Mod. No. C808. Compliance: Forthwith.