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 125/61 Electrical Power - Modification 5/83 Applicability: All models. Requirement: British Aerospace 125 Service Bulletin 24-239-(2885). Compliance: Within 100 hours time in service after 31 May 1983. Background: To ensure that resetting a circuit breaker onto a system fault will not result in rupture of the 'PE' busbar feeder fuses.