Accident Sequence
According to the certified flight instructor (CFI) who was present, the dual student was performing a takeoff. During the initial ground roll, the airplane deviated to the left, but the CFI reported that he was able to correct that swerve. As the airplane continued its takeoff roll and the tail wheel lifted off the ground, the airplane suddenly turned hard left. The CFI stated that he was unable to regain directional control before the airplane struck a snow bank that was situated on the left side of the runway. The collision caused the airplane to pitch forward onto its nose and then invert, coming to rest upside down.
Aircraft and Operational Context
The aircraft involved was a tailwheel-type airplane, and it was being used for dual instructional purposes. The specific make, model, and registration of the airplane were not provided in the source. Similarly, no details about the location, date, or time of the event were given. The runway surface was described as having a snow bank adjacent to it.
Pilot Roles
The flight deck consisted of a dual student who was handling the controls during the takeoff, and a CFI who was supervising and intervening as necessary. The CFI's account is the only reported description of the sequence of events.