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 269/71 Consolidation of Certain Early Airworthiness Directives - Older Model Hughes 269 Applicability: All models 269A, 269A-1, 269B. 8/81 Requirement: As applicable to the particular helicopter, comply with the following Hughes 269 series Service Instruction Notices:- 2A- 2, 2A-4, 2A-7, 2A-9, 2A-10, 2A-13, 2A-16, 2A-19, 2A-51, N-1.4, N-2.1, N-12, N-33, N-75.2, N-99. Compliance: Prior to issue of Certificate of Airworthiness. Background: To reduce operators administrative work load, early modifications and one-time inspections to older model 269 helicopters have been consolidated.