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 369/40 Tail Rotor Fork Hinge Nut - Replacement 8/79
Applicability: All model 369H, 369HS, 369HM and 369HE helicopters. Model 369D helicopters with S/Nos. 0003D to 0384D.
Document: As applicable: Hughes SIN HN-131, or SIN DN-33. Compliance: Within 100 hours time in service after 31 August 1979.
Background: To reduce the possibility of stress corrosion cracking, a corrosion resistant nut is introduced for the tail rotor fork hinge bolt.