COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 747 Series Aeroplanes AD/B747/106 Cabin Entertainment System Wire Bundle Chafing 4/92 Applicability: All Boeing 747-400 series aircraft as listed in Boeing Alert Service Bulletin 747- 23A2241 Revision 3. Requirement: Action in accordance with Boeing Alert Service Bulletin 747-23A2241 Revision 3. Note: FAA AD 91-23-10 also refers. Compliance: Prior to 2 April 1993. Background: This AD has been prompted by reports of chafed wires in the advanced cabin entertainment service system (ACESS) wire bundle resulting in short circuits which led to burned wire bundles. This condition, if not corrected, could result in smoke and fire in the passenger cabin.