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 146/58 Landing Gear Brake Unit 1/97 Applicability: All BAe 146 and Avro 146-RJ aircraft fitted with Dunlop Carbon Brake Units which have a spacer installed. Requirement: Inspect the brake unit and set the wear remaining length of the wear indicator pin in accordance with Dunlop Mandatory Service Bulletin No. 32-1105. Note: British Aerospace Service Bulletin S.B. 32-142 refers. Compliance: Prior to 4 March 1996. Background: The manufacturer received reports that some brakes have worn excessively causing a number of failures of the pressure stator or the adjacent rotor on brakes which have a spacer installed. To prevent such failures, this service bulletin incorporates a new procedure to find and set the wear remaining length of the wear indicator pin.