COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Boeing 737 Series Aeroplanes AD/B737/34 Forward Left Entry Door Fuselage Aft Frame Bottom Door Stop Fitting Bolts 13/89 Applicability: Model 737-300 and -400 with line numbers 1770 to 1783, 1785, 1787 to 1789. Requirement: Action in accordance with FAA Telegraphic AD T89-23-52 Inspection Requirements. Compliance: Unless already accomplished - within 20 flights after 28 December 1989. Background: Country of origin AD. Attachment bolts may have been omitted during manufacture.