Final Report: Jetstar lost flap

Lockheed 1329-23E JetStar, Houston, May 15, 2004–On final approach to William P. Hobby Airport, the pilot extended full flaps. The airplane decelerated and rolled uncontrollably to the left. The pilot regained control and landed without incident. On inspection, it was found that the left inboard flap had separated and the attach bolts were still in the flap attach brackets. The left inboard and outboard flap actuator fittings showed visible evidence of fatigue and corrosion on the surface of the inboard fitting. The NTSB determined the probable cause of the incident was the fatigue failure of the inboard left wing actuator fitting.