COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Maule M-4 Series Aeroplanes AD/ML-M4/5 Rudder Trim Tab Control - Modification 7/68 Applicability: All models with S/Nos. 3 to 94, 1C to 10C, 1S to 3S, 1T to 3T, 1001 to 1045, 1001C to 1064C, 2001S to 2003S and 2001C to 2006C. Document: Maule SL No. 14. Compliance: Within 50 hours time in service after 11 July 1968.