COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES McDonnell Douglas (Hughes) and Kawasaki 369 Series Helicopters AD/HU 369/31 Amdt 2 Overrunning Clutch Assembly - Rework and Inspection 2/79 Applicability: Models 369D, MD, H, HE, HM and HS. Document: For models 369D and MD: Hughes SIN No. DN-9.2. For models 369H, HE, HM and HS: Hughes SIN No. HN-118.2. Compliance: As detailed in the requirement document.