COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace (Hawker Siddeley) HS 748 Series Aeroplanes AD/HS 748/11 Nose Landing Gear Retraction Jack Bracket Mounting Bolts 2/95 Applicability: All HS748 aircraft. Requirement: The nose landing gear retraction jack bracket mounting bolts are lifed items and shall be replaced in accordance with British Aerospace Mandatory Service Bulletin 53/16 Revision 3. Note: CAA (UK) AD 0115 refers. Compliance: Replace bolts before they achieve 3000 flights. Background: Fatigue tests have shown that the nose landing gear retraction jack bracket mounting bolts are too highly loaded to attain a long fatigue life. Distortion of the bolts has been experienced on aircraft in service.