COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 737 Series Aeroplanes AD/B737/41 Forward Door Evacuation Slides 8/90 Applicability: Models 737-300 and 737-400 equipped with Air Cruisers Company forward door evacuation slides P/N D31591-448 through -454 with S/Nos 0001 to 1602. Requirement: Action in accordance with Air Cruisers Company SB 103-25-17. Note 1: FAA AD 90-09-11 refers. Note 2: Boeing SB 737-25-1260 refers. Compliance: Prior to 9 August 1993. Background: Country of origin AD. Evacuation slides may fail to automatically inflate upon deployment, and if not corrected could delay emergency evacuations.