Incident Overview
A single-engine aircraft on a personal cross-country flight experienced a sudden engine failure, prompting the pilot to execute an emergency landing. The aircraft touched down in an alfalfa field but landed long, continuing beyond the intended landing area. At the end of the field, the aircraft collided with a telephone pole and a fence, causing structural damage.
Engine Failure Details
Investigation into the engine failure revealed that an exhaust valve had separated from its assembly. The loose valve entered the combustion chamber, where it severely damaged the piston and cylinder head. This mechanical failure led to a total loss of engine power during flight.
Landing and Impact
The pilot was forced to land in the available field. However, due to the extended landing distance, the aircraft overran the field boundary and struck a telephone pole and fence. The impact with these obstacles caused additional damage to the airframe.