COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES Beechcraft 400 Series Aeroplanes AD/BEECH 400/4 Fuselage Rivets 13/93 Applicability: Model 400A with serial numbers RK-1 through RK-41. Model 400T with serial numbers TT-3 through TT-20. Requirement: Action in accordance with Beechcraft Mandatory Service Bulletin 2482. Note: FAA AD 93-16-12 Amdt 39-8670 refers. Compliance: Within 100 hours' time in service after 9 December 1993. Background: The FAA received reports that during manufacture, rivets may have been inadvertently omitted from the area adjacent to the upper edge of the emergency exit door.