COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace BAe 146 Series Aeroplanes AD/BAe 146/48 Lift Spoiler Jack 2/94 Applicability: BAe 146 series aircraft fitted with either lift spoiler jack P/N P308-45-0002 or P308- 45-0102. Requirement: Unless previously carried out action in accordance with British Aerospace Mandatory Inspection Service Bulletin 27-137. Note: Both UK CAA AD 005-11-92 and FAA AD 93-21-07 amdt 39-8721 refer. Compliance: At the next schedule maintenance check of the lift spoilers configuration warning microswitches or by 31 December 1994, whichever occurs first. Background: The manufacturer has advised that the lift spoiler unlocked indication system may suffer from a dormant failure.