COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Israel Aircraft Industries 1123 and 1124 (Westwind) Series Aeroplanes AD/IAI-W/10 Emergency Lighting System 8/85 Applicability: As detailed in Requirement Document. Requirement: Inspect and Modify the emergency lighting system components according to Accomplishment Instructions Parts 1 and 2 contained in IAI Westwind S.B. 1124-33-010. Compliance: Within 150 hours time in service after 31 August 1985. Background: The aircraft manufacturer advises that: a) the inertial switch may not be aligned with the longitudinal axis of the aircraft; and b) the possibility exists for an inadvertent battery pack short circuit to surrounding structure.