COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Skyfox Aviation (Hedaro) CA25 Series Aeroplanes AD/CA25/1 Amdt 2 Life Limited Components 2/96 Applicability: All CA22A/25, CA25, CA25N aircraft. Requirement: The following components are to be retired from service at the times shown: Component Maximum Time in Service Wing Front and Rear Spars 4000 Hours Wing Lift Struts and Carry-Through Structure 4000 Hours Horizontal Stabiliser Spar 8000 Hours All Other Structure, Except Doors and Fairings 8000 Hours Compliance: As specified in the Requirement, with effect from 1 February 1996. Background: The life limits in this directive are the best estimates of when fatigue cracking will become unacceptably likely. Amendment 1 extended the life limits of the components based on stress and fatigue analyses supplied by the manufacturer. This Amendment includes the CA25N and clarifies the definition of other primary structure.