Accident Overview
A homebuilt experimental airplane experienced a partial loss of engine power, which then progressed to a complete stoppage. The pilot was unable to restart the engine and subsequently executed a forced landing in a muddy field. During the landing roll, the nose gear collapsed and the engine separated from the airframe.
Pilot Statement
The pilot reported that the airplane's fuel tanks had been filled with autogas, and the outside air temperature was approximately 80 degrees Fahrenheit. According to the pilot, the engine may have lost power due to fuel starvation resulting from vapor lock. However, this is the pilot's personal belief and not a confirmed finding.
Postaccident Inspection
Following the accident, an inspection was performed on the engine. The engine was then operated and no evidence of any preimpact mechanical anomaly was found. The cause of the power loss remains undetermined based on the inspection results.