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-M4/7 Aileron Control System - Modification 10/69 Applicability: All models. Requriement: Remove the bolt attaching the most forward aileron control system pulley to the control column. Replace the pulley assembly with the addition of washers AN970-5 and AN960-516, and bolt AN5-27 instead of the original bolt in the following order from front to rear: 1. AN5-27 Bolt - head forward. 2. AN970-5 Washer 3. AN960-516 Washer 4. Original Pulley 5. Control Column 6. AN960-516 Washer 7. AN365-524 Nut. Compliance: Within 25 hours time in service after 1 October 1969.