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-2/57 Acrylic Windshield and Side Windows 6/96 Applicability: MU-2B -10, -15, - 20, -25, -26 S/N 008 to 347 (except 313 and 321), and -30, -35, - 36, S/N 501 to 696 (except 652 and 661); equipped with windscreen, cockpit or cabin windows P/Nos: 010A-31450-1 or -2 010A-31451-1 or -2 010A-31874-1 or -2 010A-31870 010A-31870-11 030A-32402 Requirement: Inspect, and replace as necessary, in accordance with MHI MU-2 SB 224A. Note: JCAB AD TCD-4311-95 refers. Compliance: Within 100 hours time in service after 23 May 1996, thereafter at intervals not exceeding 100 hours time in service. Background: This Directive is issued to prevent possible in-flight failure of the acrylic transparencies due to undetected cracking.