Flight and Event Sequence
After a normal start and taxi, the airplane was cleared for takeoff. The pilot began the takeoff roll and, upon reaching 100 knots, rotated the airplane. Immediately after rotation, the airplane experienced an uncommanded right yaw. The right rudder pedal was reported to be "at the floor." Both pilots applied pressure to the left rudder pedal, but the pedal barely moved. The pilot then attempted to manipulate the rudder trim; however, the airplane continued to yaw to the right. The pilot subsequently manipulated the throttle controls and landed the airplane on the left side of the runway. The airplane remained difficult to control, and the left landing gear collapsed, causing the airplane to slide to a stop on its left side.
Postaccident Examination
Postaccident examination of the cockpit revealed that the rudder trim was fully trimmed to the nose right position. Examination of the rudder and rudder trim assembly found no anomalies that would have precluded normal operation.
Findings
The reason for the unmanageable right yaw could not be determined.