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 369/9 Installation of New Vne Placard 4/72 Applicability: All models with S/Nos. 0101S to 0357S, 0101M to 0213M, 0101E to 0215E. Document: Hughes SIN No. HN-45. Compliance: Within 10 hours time in service after 11 April 1972.