Background
A private pilot, also a rancher, was completing a work flight. During the flight, the pilot performed five off-airport landings on snow that was 5 to 6 inches deep.
Accident Sequence
The accident occurred during a subsequent landing at a local airport on a snow-covered runway. During the landing, the aircraft sank into deep snow and nosed over.
Aftermath
After the accident, the depth of the snow on the runway was measured to be approximately 12 inches. No NOTAMs pertaining to snow on the runway had been issued prior to the accident, although a NOTAM was issued after the incident.