COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Piper PA-18 and 19 (Super Cub) Series Aeroplanes AD/PA-18/11 Amdt 1 Lower Horizontal Stabiliser Brace Wire Fuselage Attachment Tab - Inspection and Modification 12/81 Applicability: All models PA-18-150 with S/Nos. 18-8602 to 18- 8109013. Document: Piper Service Bulletin No. 706A. (FAA AD 81-06-80 Letter of 13-3-81 refers). Note: Aircraft modified to Piper SB No. 706 do not require further rework. Compliance: 1. Unless already accomplished, inspect within 100 hours time in service after 31 December 1981. 2. Unless already accomplished, modify within 300 hours time in service after 31 December 1981. Background: Revision "A" of Piper SB introduces a revised template shape for horizontal stabiliser brace wire additional support plate.