COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Cessna 188 (Agwagon) Series Aeroplanes AD/CESSNA 188/30 Goodyear Fuel Cells 6/78 Applicability: All models 188 fitted with Goodyear BTC-39 fuel cells. Requirement: Action in accordance with Cessna SL No. SE78-10. Compliance: Within 100 hours time in service after 30 June 1978 and annually thereafter as detailed in Cessna SL No. SE78-10.