COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 400 Series Aeroplanes AD/CESSNA 400/66 Aileron and Elevator Control Surfaces - Modification Applicability: All model 441 with S/Nos. 441-0001 to 441-0090. Document: Cessna Customer Care Owner Advisory No. PJ 79-3A. (FAA AD 79- 09-02 Amdt. 39-3453 refers). Compliance: Within 100 hours time in service after 30 June 1979. 6/79 Background: An inflight aileron vibration/flutter incident was caused by an accumulation of water in one of the aileron control surfaces.