Event Summary
The airplane was substantially damaged when it impacted the runway during landing. The pilot reported deploying full flaps during a right turn from base leg to final approach. Upon rolling out of the turn, he realized that the flaps were not symmetrically deployed: the right flap was fully extended, while the left flap was only partially down. He attempted to raise the flaps, but they became jammed in an asymmetrical configuration.
Pilot Report
The pilot stated that as he rolled out for the flare, the left wing stalled and dropped sharply. He attempted to add power, which temporarily lifted the left wing. However, with the right wing generating significant lift and the left wing not, a steep left turn and loss of control resulted.
Post-Accident Examination
A post-accident examination confirmed flap system continuity. The flap actuator motor operated when electrical power was applied. Impact damage precluded an exact measurement of the flap deflections and rigging.
Previous Incident
The pilot noted that he had experienced an asymmetric extension and jammed flap situation about two months prior to the accident. In that instance, he had maintained additional airspeed on approach and landed safely. He reported that subsequent maintenance action had resolved the problem, and he had not experienced any further flap problems until the accident flight.