COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Eurocopter AS 350 (Ecureuil) Series Helicopters AD/ECUREUIL/4 Main Rotor Shaft Star Drive Adapter - Inspection Applicability: All models fitted with main rotor shaft assembly P/N 350A.37.0003. Document: AS 350 SB 65.01. 8/79 Compliance: Within 25 hours time in service after 5 July 1979, and thereafter in accordance with paragraph D(2) of the requirement document. Background: It is possible to install the rotating star drive adapter incorrectly on the rotor shaft.