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-8/32 Landing Gear Hydraulic Selector Valve 7/94 Applicability: All DHC-8-100 series aircraft S/N 003 through 038 not incorporating modification 8/0530. Requirement: Unless previously carried out action in accordance with de HAVILLAND Dash 8 Alert Service Bulletin A8-32-117. Note: Transport Canada AD CF-94-05 refers. Compliance: Within 300 hours time in service from 30 June 1994 or by 30 October 1994, whichever occurs first. Background: The manufacturer has advised that pilot valve leakage which has not been corrected may, when combined with a low voltage condition, lead to an inadvertent landing gear retraction.