Accident Sequence
The accident occurred when an aircraft impacted the side of a 3,100-foot mountain at an elevation of approximately 2,000 feet in a mountainous area. According to witnesses, the aircraft was observed making several steep turns and performing climbs and descents while flying in and out of clouds. The aircraft was last seen heading toward the accident site, and its wings rocked from side to side just before reentering the clouds. Moments later, witnesses heard the sound of the aircraft striking terrain. After the impact, no further engine sounds were heard.
Weather Conditions
The base of a cloud layer obscured the accident site and the top of the mountain. The pilot had obtained a weather briefing before departure and was advised that an AIRMET (Airman's Meteorological Information) was in effect, warning of mountain obscuration due to clouds, fog, and precipitation, as well as occasional moderate turbulence below 15,000 feet.
Pilot Information
The pilot held an FAA commercial pilot certificate, which was based on a Swiss commercial certificate. No record of an instrument rating was found.