COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes AD/IAI-W/7 Pilot and Co-Pilot Seat Attachments - Inspection 12/81 Applicability: All models 1124/1124A with S/Nos. 152, 156, 174, 181, 185, 186 and 187 to 335. Document: I.A.I. SB No. WW-24-22. Compliance: Within 150 hours time in service after 31 December 1981. Background: There is a possibility of insufficient seat support attach angle engagement.