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 125/126 Amdt 1 Electrical Power/Generator Power 12/93 Applicability: British Aerospace 125 Series Aircraft as follows: Series F400 Post Mod 252556 Series F600 Post Mod 252475 Series 700 Pre Mod 252636 Post Mod 252789 Pre Mod 252789 & Post Mod 252636 Series 800 Pre Mod 253149 Post Mod 253149 Requirement: Modify the aircraft in accordance with Corporate Jets Limited 125 Series Aircraft Mandatory Service Bulletin No SB-24-289-3267A, B, C, D, E, F & G Revision 1 dated 10 April 1992. Note: This Service Bulletin has been classified as mandatory by the CAA(UK). Compliance: The compliance for the original issue of this Directive was prior to 30 June 1992. The compliance for this amendment is prior to 30 April 1994. Background: This modification reduces the possibility of earth wire damage bringing about an uncontrolled overvoltage, with a resulting battery overheat and/or failure of sensitive equipment. This amendment is issued following the publication of Revision 1 to the Service Bulletin which provides alternate earth locations and relay positions for some Series 400, 600 and 700 aircraft with different configurations.