What happened
During the takeoff roll on a 2,980-foot asphalt runway under calm wind conditions, the pilot of a Cessna 180K decided to abort the takeoff due to what was perceived as an inadequate power situation. While attempting the aborted takeoff, the pilot applied the brakes. There was no initial response to the braking application, but upon applying more firm pressure, the left brake grabbed, causing the aircraft to veer to the left. The pilot could not maintain directional control, leading to the collapse of the aircraft's right main gear.
The investigation
An examination of the aircraft's wheels and brakes following the accident revealed that both brake discs appeared to have been overheated. Investigators noted that the left wheel continued to rotate and was able to stop when the left brake was applied. The right brake could not be tested in a similar manner because it had separated from the airframe during the event. The parking brake was found to be disengaged and was confirmed to be functioning satisfactorily after the accident.
Findings
- Both brake discs showed signs of overheating.
- The pilot experienced a loss of directional control following a left brake grab.