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-2/64 Elevator Trim Indication 12/98 Applicability: Model MU-2B-10, -15, -20, -25 and -26 aeroplanes with serial numbers (S/N) 008 through 347 (except S/N 313 and 321); and model MU-2B-30, -35 and -36 aeroplanes with S/N 501 through 696 (except S/N 652 and 661). Requirement: Modify the elevator trim indicator scale dial in accordance with Mitsubishi Heavy Industries Service Bulletin No 228 dated 13 July 1998. Note: JCAB TCD-3740A-98 refers. Compliance: Within 100 hours time in service from the effective date of this directive. This Airworthiness Directive becomes effective on 5 November 1998. Background: AD/MU-2/52, issued in 1993, mandated the modification of the autopilot to reduce nose-down trim range. This directive requires the modification of the elevator trim indicator scale to be consistent with the available range of the elevator trim.