Accident Summary
During the takeoff roll, the pilot recognized that the engine was not developing full power. The pilot aborted the takeoff but felt that the airplane would run off the end of the runway. The ground speed at the time of the abort was between 55 and 60 knots. The pilot intentionally ground looped the airplane by applying full rudder. Following the ground loop, the airplane slid into a ditch.
Sequence of Events
The takeoff roll began normally, but soon the pilot noticed a lack of full engine power. Deciding to abort, the pilot initiated the rejection. With the airplane accelerating to 55-60 knots, the pilot determined that the remaining runway length was insufficient to stop. To prevent the airplane from leaving the runway surface, the pilot executed a ground loop by applying full rudder. The maneuver caused the airplane to veer sharply, and it subsequently slid into a ditch adjacent to the runway.
Post-Accident Examination
An examination of the engine revealed a stuck exhaust valve in the number 3 cylinder. This condition was consistent with the loss of power experienced during the takeoff roll.