COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 747 Series Aeroplanes AD/B747/123 Stretched Upper Deck Escape System 5/94 Applicability: Model 747 series aircraft with a stretched upper deck, all line numbers up to and including line number 980. Requirement: Action in accordance with the technical requirements of FAA AD 94-01-15 Amdt 39- 8797. Note: Boeing ASB 747-25A3056 refers. Compliance: Prior to 31 October 1994. Background: The FAA received a report that, during deployment of a stretched upper deck emergency evacuation slide, the slide inflated, but subsequently lost air from one chamber.