COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 188 (Agwagon) Series Aeroplanes AD/CESSNA 188/8 Amdt 1 Applicability: All models. Engine Mount 6/85 Requirement: Visually inspect the engine mount for cracking, paying particular attention to the rear engine mount bearers, rear cross tube, and upper firewall attach fittings. Compliance: At each issue of a new Maintenance Release. Background: This Directive has been amended to include the firewall attachment fittings following a recent fatigue failure.