COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Mitsubishi MU-2 Series Aeroplanes AD/MU-2/51 Autopilot Engage Switch Guard 3/92 Applicability: All Models MU-2 fitted with Bendix M4C or M4D autopilots. Requirement: Action in accordance with MHI MU-2 Service Bulletin 076/22-008. Note: JCAB TCD-3464-91 also refers. Compliance: Within 100 hours time in service after 6 March 1992. Background: To preclude the unintentional engagement of the autopilot.