COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Eurocopter SA341 and SA342 (Gazelle) Series Helicopters AD/GAZELLE/8 Non Rotating Scissors Attach Bolt - Replacement 7/79 Applicability: All models fitted with main rotor head P/N 341A.31.0001 or 341A.31.0020, all dash numbers, and not incorporating modification AMS 07.6129. Document: Gazelle SB 01-18. Compliance: Within 100 hours time in service after 31 August 1979. Background: The original specified torque for the non rotating scissors attach bolt has been found to be too low, and resulted in cases of excessive bolt wear. A new bolt is to be installed, and torqued to a revised figure.