Incident Overview
An instructional flight was concluding as the aircraft returned to the airport for landing. The student pilot was handling the landing, but when snow showers were encountered while flying downwind, the instructor pilot assumed control. The instructor later stated he was landing the aircraft with a nose-high attitude because of snow accumulation on the runway.
Loss of Control and Nose-Over
During the landing roll, directional control was lost. The aircraft drifted off the runway, and the left main landing gear entered mud. Subsequently, the aircraft nosed over into an inverted attitude.
Outcome
The aircraft came to rest inverted. No further details about the aircraft, occupants, or injuries are provided in the source.