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 125/128 Amdt 1 Rear Equipment Bay Drain Masts 9/92 Applicability: Model 125 Series as listed in BAe 125 SB 53-74-3193 C&D Revision 1. Requirement: Action in accordance with BAe 125 Mandatory SB 53-74-3193 C&D Revision 1. Compliance: Unless already accomplished in accordance with the initial issue of this Directive; prior to 31 October 1992. The compliance of the previous issue of this Directive is as stated. This Amendment is effective from 20 August 1992. Background: Modification action is required in order to provide fluid venting clear of the rear fuselage structure, thereby avoiding the possibility of reingestion. Amendment 1 is issued in response to a revision of the Requirement Document which expands applicability and includes the removal of additional access panels in the accomplishment instructions.