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 269/33 Main Rotor Mast - Inspection for Internal Corrosion
5/70
Applicability: All models. Document: Hughes SIN No. N-74.
Compliance: Within 300 hours time in service after 29 May 1970.