COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 90 and 65-90 (King Air) Series Aeroplanes AD/BEECH 90/50 Goodyear Fuel Cells - Inspection 6/78 Applicability: Models 65-90, 65-A90, B90 and C90 with S/Nos. LJ-1 to LJ-608; E90 with S/Nos. LW-1 to LW-73, 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.