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-2/39 Fitment of Manual Ignition Switches 4/87 Applicability: Models MU-2B -10, -15, -20, -25, -26, -26A, -30 -35, -36, -36A, -40 and -60. Requirement: Embody manual ignition switches in accordance with; For Mitsubishi Heavy Industries Ltd aircraft - MHI SR 066B dated 13 November 1986, and For Mitsubishi Aircraft International Inc. aircraft - MAI SR 040/74-001 Revision A dated 11 December 1986. Note 1. FAA AD 86-26-02 Amdt 39-5498 refers. Note 2. An Australian Flight Manual amendment is required for all applicable aircraft fitted with manual ignition switches. Compliance: Unless already accomplished. Prior to operations after 30 June 1987. Background: This Directive provides a continuous ignition selection capability to prevent engine flameouts when operating in, or departing from, an icing environment and to rapidly restore power subsequent to an ice induced flameout.