COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Short SD3-30 Series Aeroplanes AD/SD3-30/11 Flexible Brake Hoses/Main Landing Gear Beam - Inspection and Modification Applicability: All models SD3-30 with S/Nos. SH3002 to SH3063. Document: Shorts SB No. SD3-32-92, Rev. 1. 6/82 Compliance: Unless already accomplished, within 300 hours time in service after 30 June 1982. Background: Instances have occurred where the flexible brake hoses have been rubbing on the main landing gear beam causing wear in the internal bore.