Narrative
During cruise flight, the engine experienced a partial loss of power. The pilot reported that he applied carburetor heat, and shortly thereafter the engine lost all power. An emergency landing was initiated on mountainous, wooded terrain. During the landing, the airplane clipped trees, impacted the ground, slid approximately 30 feet, and came to rest inverted.
Examination
An examination of the airframe revealed no anomalies. The engine was inspected, and water was found in the gascolator, carburetor float bowl, and accelerator pump housing. The source of the water contamination was not determined. Additionally, mice were discovered in the carburetor air box and venturi area. One mouse was lodged in the throttle valve.
Fuel Records
Receipts indicated that the airplane had received about 17 gallons of fuel the day before the occurrence. Since that fueling, the airplane had been flown for approximately one hour.
Pilot Statement
The pilot stated that before each flight, he drained each fuel drain. He reported that water was detected in the fuel samples, but he continued to drain the fuel until no more water was apparent.