COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Short SD3-60 Series Aeroplanes AD/SD3-60/22 Amdt 1 Horizontal Stabilizer Spar Webs 13/87 Applicability: All models SD3-60 aircraft with S/Nos SH 3601 through SH 3679 inclusive which have exceeded 8000 flights, and all models SD3-60 aircraft with S/Nos SH 3680 through SH 3691 inclusive and SH 3694 which have exceeded 12000 flights. Requirement: Action in accordance with Shorts SB SD360-55-11 Rev 3. Compliance: Unless already accomplished: Part A: For aircraft with S/Nos SH 3601 through SH 3679; at the next scheduled inspection for Maintenance Release issue after 31 December 1987, and thereafter at intervals not exceeding 1000 flights, until modified in accordance with Shorts SB SD360-55-12 Rev 2. Note: Aircraft referenced in Part A which have only used a 15 degree take-off flap configuration during their first 5000 flights may utilize the Part B compliance. Part B: For aircraft with S/Nos SH 3680 through SH 3691 and SH 3694; at the next scheduled inspection for Maintenance Release issue after 31 December 1987, and thereafter at intervals not exceeding 1500 flights, until modified in accordance with Shorts SB SD360-55-12 Rev 2. Background: This Amendment updates the Compliance as a result of additional testing by the manufacturer.