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 269/53 Fibreglass Tail Rotor Blades - Inspection 10/75 Applicability: All Series fitted with fibreglass tail rotor blades P/Nos. 269A6124, 269A6124-9, 269A6035, 269A6035-9, 269A6035-17, 269A6035-19, 269A6035-M, 269ASK15 & 269- 6100. Document: Hughes SIN No. N-130. Compliance: As detailed in requirement document.