COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 340 Series Aeroplanes AD/CESSNA 340/14 Oxygen System - Cleaning 6/77 Applicability: All models with S/Nos. 340A0040 thru 340A0225, 340A0229 and 340A0230. Document: 1. Cessna SL ME77-3; or 2. FAA AD 77-06-05. Compliance: Within 25 hours time in service after 9 March 1977.