COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Airparts (NZ) Ltd. FU 24 Series Aeroplanes AD/FU24/43 Installation of Crash Axes 9/71 Applicability: All models. Requirement: 1. Aircraft engaged in agricultural operations - Install a crash axe on the left hand inner side of the cockpit immediately below the canopy opening. 2. Aircraft fitted out for passenger carrying in the fuselage - Install a crash axe on the left hand inner side of the cockpit immediately below the canopy opening, and another on the inside surface of the cargo door. Compliance: Within 100 hours time in service after 30 September 1971.