COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace BAe 125 Series Aeroplanes AD/HS 125/56 Aileron, Rudder & Elevator Trim Jack Input Gear Shafts - Inspection Applicability: All HS/DH/BH125 aircraft all series up to and including series 700. Document: British Aerospace HS 125 SB No. 27-130, Rev. 1. Compliance: At next removal of control surfaces. Background: Failure of a trim jack input gear shaft has occurred in service. 8/81