COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 340 Series Aeroplanes AD/CESSNA 340/18 Passenger Seat Installation - Inspection 9/78 Applicability: All model 340 with S/Nos. 340-0001 to 340A-0472. Document: Cessna SL No. ME78-17 (FAA AD 78-13-05 Amdt. 39-3250 refers). Compliance: Within 100 hours time in service after 30 September 1978.