COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Schweizer (Hughes) 269 Series Helicopters AD/HU 269/37 Main Rotor Lead - Lag and Flapping Hinge Bolts P/N HS1446-10-68 Vendo Identification (BM) - Inspection Applicability: Models 269A, 269A-1, 269B and 269C delivered prior to 1 August 1970. Document: 1. Hughes SIN No. N-78; or 2. FAA AD 70-17-3. Compliance: In accordance with the requirement documents. 10/70