COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 747 Series Aeroplanes AD/B747/47 Upper Deck Type A Door - Power and Slide Deployment Mechanism Fasteners Applicability: All aircraft listed in the Requirement Document. Requirement: Action in accordance with Boeing SB 747-52A2198. Note: FAA AD 86-02-03 refers. Compliance: Prior to 31 March 1986. 4/86 DM Background: Boeing Co have reported that a significant percentage of self locking nuts P/N BACN10JC6CM in stock do not meet specified locking torque requirements.