COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES SIAI Marchetti 260 Series Aeroplanes AD/SM-260/4 Amdt 3 Main Landing Gear Control Bellcrank Bolts 5/88 Applicability: Models F260, F260B, F260C and F260D with S/Nos listed in SIAI-Marchetti SB No 260B36 revision C. Requirement: Action in accordance with SIAI-Marchetti Service Bulletin No 260B36 revision C. Note: RAI AD No 87-227/F260-29 Rev 3 refers. Compliance: At maintenance inspection intervals as listed in the Requirement document. Note: Improved replacement bolts P/No 260-14-35-5 are now inspected at maintenance intervals not exceeding 1500 hours time in service. Background: This amendment has been raised to expand applicability and inspection intervals in accordance with a revision of the Requirement document.