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/61 Amdt 2 Wing/Fuselage Attachment 2/95 Applicability: Model HP137 Mk1, Jetstream Series 200, and Jetstream Series 3100 aircraft. Requirement: Action in accordance with British Aerospace Mandatory Service Bulletin 57-JA 930941 Revision 2. Compliance: As specified in the requirement document with an effective date of 2 February 1995. Background: Cracks and corrosion on the spigot housing plate at the wing/fuselage forward- attachment sliding-joint, have been reported on an in-service Jetstream 3100 aircraft. Amendment 1 split the inspection of the spigot from the inspection of the spigot housing plate in order to ease operator workload, and added new compliance instructions for repeat inspections. Amendment 2 is issued in response to a revision of the Requirement document which introduces several changes including an optional ultrasonic test and an extension of compliance.