COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES SIAI Marchetti S205 and S208 Series Aeroplanes AD/SM- 205/9A Wing Rear Spar - Inspection and Modification 2/72 Applicability: All models S.205 and S.208. Document: SIAI Marchetti SB No. 205B42. Compliance: Unless already accomplished: 1. Inspect within 25 hours time in service after 12 February 1976 and thereafter at intervals not exceeding 25 hours time in service until modified. 2. Unless already accomplished, modify within 200 hours time in service after 12 February 1976.