COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Vickers Supermarine Spitfire Series Aeroplanes AD/SPITFIRE/1 Chassis Pintles 13/96 Applicability: All mks, all models. Requirement: Unless already accomplished, inspect the MLG chassis pintles for cracking using a magnetic particle method (MPI). Note: UK CAA MPD 1995-089 refers. Compliance: At the next inspection for Maintenance Release issue after 5 December 1996; thereafter before installation of replacement pintles. Background: As the result of a landing gear failure in 1976 the UK CAA advised UK operators to undertake an inspection of the MLG chassis pintles. Since that time there have been cracks reported in new spares. As a precaution, the aircraft on the Australian Register will require a one time inspection.