COMMONWEALTH OF AUSTRALIA (Civil Aviation Regulations 1998), PART 39 - 105 CIVIL AVIATION SAFETY AUTHORITY SCHEDULE OF AIRWORTHINESS DIRECTIVES British Aerospace BAe 3100 (Jetstream) Series Aeroplanes AD/JETSTREAM/9 Wing Attachment to Fuselage Spigot Installation Applicability: All Jetstream 3100 aircraft with S/Nos 601 to 666. Requirement: Action in accordance with British Aerospace Alert SB 57-A-JA 85-941. 11/85 T Compliance: Within 50 hours time in service after 25 September 1985 or 7 days after 25 September 1985, whichever occurs first. Background: An operator has reported that a Spigot P/No 13781 B7 attaching the wing front spar to fuselage STN 199 had become disengaged from the Spigot housing.