COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Pilatus Porter PC-6 Series Aeroplanes AD/PC-6/41 Rudder Pedal Supports 5/95 Applicability: All PC-6 aircraft S/N 001 to 824 inclusive fitted with steel rudder pedal support tube P/N 6232.0196.00. Requirement: Visually inspect the rudder pedal support for cracks using a 10X glass. Inspect in accordance with Pilatus Service Bulletin (SB) PC-6-A-162, Accomplishment Instructions A(2). Note: Swiss FOCA AD HB 89-301 refers. Compliance: Initially inspect within 5 hours time in service from 15 April 1995. Re-inspect at intervals not to exceed 100 hours time in service. Background: Cracking has been reported on in-service aircraft. Failure of the rudder pedal support tube could result in a reduction in control of the aircraft.