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-2/23 Nose Landing Gear Retracting Mechanism - Inspection 11/81 Applicability: All models MU-2B/-10/-15/-20/-25/-26 with S/Nos. 005 to 347 except S/Nos. 313 and 321. All models MU-2B-30/-35/-36 with S/Nos. 501 to 696 (except S/Nos. 652 and 661). Requirement: To prevent the possible failure of the NLG retracting mechanism perform the following: 1. Inspect the NLG retracting mechanism down lock system in accordance with Mitsubishi MU-2 SB No. 188 dated 13 July 1981. Note: JCAB AD No. TCD-2070-81 refers. Compliance: Unless already accomplished, within 100 hours time in service after 30 September 1981. Background: The nose landing gear down lock system may be improperly adjusted.