Control - Other involving a Fokker B.V. F28 MK 4000, VH-EWB, 130km W Melbourne, VIC on 18 July 1994

During recovery from a stick shaker exercise, as part of an endorsement sequence, the aircraft departed from controlled flight prior to the speed reducing to the published stick shaker speed. Recovery was reported to have taken approximately 1800 feet. The aircraft was returned to maintenance for investigation. During the maintenance investigation , three minor leaks were found from butt straps on the left wing leading edge. Advice from the manufacturer was that such leaks could definitely affect the stalling behaviour of the aircraft. The leaks were rectified and a subsequent test flight confirmed stalling characteristics were normal.