What happened
The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.
The pilot was demonstrating a night, power-off approach and landing to the student. He overshot the turn to final approach and was correcting back toward the centerline as the aircraft touched down near the right edge of the runway. The right main tire contacted a snowbank left by the snowplow, which caused the aircraft to turn into the snow and nose over. This caused minor damage to the airplane and no injuries to the crew.
As the FAA filed it
THE PILOT WAS DEMONSTRATING A NIGHT, POWER-OFF APPROACH AND LANDING TO THE STUDENT. HE OVERSHOT THE TURN TO FINAL APPROACH AND WAS CORRECTING BACK TOWARD THE CENTERLINE AS THE AIRCRAFT TOUCHED DOWN NEAR THE RIGHT EDGE OF THE RUNWAY. THE RIGHT MAIN TIRE CONTACTED A SNOWBANK LEFT BY THE SNOWPLOW, WHICH CAUSED THE AIRCRAFT TO TURN INTO THE SNOW AND NOSE OVER. THIS CAUSED MINOR DAMAGE TO THE AIRPLANE AND NO INJURIES TO THE CREW.