COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Douglas DC3 Series Aeroplanes AD/DC3/8 Reissue Applicability: All models. Fire Extinguisher Release Cable Conduit - Replacement 1/84 Requirement: Replace aluminium fire extinguisher control conduit with stainless steel tubing and nickel steel fittings. Note: Douglas SB DC3 No. 246 refers. Compliance: Unless already accomplished, within 100 hours time in service after 29 February 1984. Background: This Directive is reissued with no changes made to the requirement.