Background
The pilot was operating under a VFR flight plan at night and was cruising at 5,000 ft MSL when a snow squall was encountered. The pilot was not certificated to fly at night.
Accident Narrative
Upon encountering the snow squall, the pilot descended to 4,000 ft MSL in an attempt to fly below the weather and continue the flight. The pilot reported being unable to recall events after reaching 4,000 ft MSL. The aircraft crashed on level, snow-covered terrain and continued approximately 300 ft after impact. The crash site elevation was about 2,200 ft MSL.
Rescue and Survivors
The aircraft was located and the survivors were rescued within two hours after the accident.
Investigation Findings
An inspection of the wreckage revealed no preimpact malfunction or failure of the flight controls or engine. Local residents estimated visibility from less than one mile to three miles with snow falling and blowing. The wind chill factor was approximately minus 50 degrees Fahrenheit.