COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Bombardier (Boeing Canada/De Havilland) DHC-8 Series Aeroplanes AD/DHC-8/24 Fuel Heater Low Fuel Pressure Switch Adapter/Snubber and Engine Nacelle Sealing Applicability: DHC-8-102, -103, -301, and 311 Series. Requirement: Action IAW the technical requirements of the FAA AD 92-13-11. 13/92 DM Note: Transport Canada Airworthiness Directive CF-92-12; All Operator Messages 131, 138 and 152; and Alert Service Bulletin A8-73-14 refer. Compliance: As detailed in the Requirement Document with an effective date of 4 November 1992. Background: Investigation into an incident involving a nacelle fire indicated that overtorquing and improper seating contributed to the failure of the fuel heater low pressure switch adapter/snubber resulting in a fuel leak in the nacelle.