Incident Overview
A test flight involving two crew members experienced a malfunction during the takeoff roll. The right main gear brake dragged, prompting the pilot to perform a ground loop to avoid colliding with trees located beyond the runway end. The aircraft came to rest substantially damaged and was deemed beyond repair. Both occupants emerged uninjured.
Sequence of Events
The flight was a local test operation with both crew members on board. As the aircraft accelerated for takeoff, the right main landing gear brake began dragging, affecting directional control. To prevent the aircraft from overrunning the runway and striking trees, the pilot intentionally executed a ground loop. The maneuver kept the aircraft on the ground but resulted in structural damage. After coming to a stop, the aircraft was assessed as damaged beyond economical repair.
Maintenance History
The aircraft's braking system had been subject to recent maintenance. Two days prior to the accident, an assembly change and adjustment were performed on the landing gear. The source notes inadequate maintenance and inspection, improper clearance and tolerance in the braking system, and a delayed action in aborting the takeoff as contributing factors to the event.
Probable Cause and Factors
The official investigation determined the probable cause to be an aborted takeoff due to landing gear problems. Specific factors reported include: a dragging right brake during takeoff, improper clearance/tolerance in the braking system, inadequate maintenance and inspection, delayed decision to abort the takeoff, and the subsequent evasive ground-loop maneuver to avoid collision with trees.