What happened
The pilot was conducting a visual arrival for a runway requiring a crosswind landing. To manage the approach path, the pilot initiated a high-altitude approach and deployed full flaps to increase the descent rate. This maneuver allowed the aircraft to clear trees located near the approach end of the runway.
The pilot reported that the touchdown on the runway surface was normal. However, immediately after contact with the ground, before the pilot could retract the flaps, a crosswind component pushed the aircraft laterally to the left. The aircraft subsequently struck a snowbank and nosed over.
The investigation
No mechanical examination of the airframe or systems is detailed in the source narrative. The account relies entirely on the pilot's statement regarding the sequence of events during the landing phase.