COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 18 Series Aeroplanes AD/BEECH 18/19 Goodyear Fuel Cells - Inspection 6/78 Applicability: Model H18 with S/Nos. BA-618 to BA-765 fitted with Goodyear BTC-39 fuel cells. Document: Beechcraft SI No. 0895. Compliance: Within 100 hours time in service after 30 June 1978 and thereafter at intervals not exceeding twelve months. Federal Register of Legislative Instruments F2006B03617