COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 320 Series Aeroplanes AD/CESSNA 320/3 Nose Gear Main Drive Tube Assembly - Inspection Applicability: All models which have exceeded 1000 hours time in service. 9/68 Requirement: 1. Inspect the bearing P/N 4NBC612ZP for movement between the outer race and the eye end of the nose gear main drive tube P/N 0842120-1. 2. If movement is found inspect the entire nose gear assembly for damage or incorrect adjustment. The inflation of the shock leg is of major importance. Compliance: Within 100 hours time in service from 5 September 1968 and there-after at intervals not exceeding 200 hours time in service.