Primary finding
Probable cause
The pilot’s failure to maintain directional control during takeoff in flat light conditions which resulted in a loss of control and impact with a snow berm.
Investigator assessment
Analysis narrative
The pilot reported that the runway had about 12 inches of new snow and the runway edge lights were not visible. During the takeoff run, in flat light conditions, he was unable to determine the centerline of the runway, and the airplane subsequently drifted left of centerline. The left main landing gear impacted a snow berm along the edge of the runway and the airplane spun around 90°, which resulted in substantial damage to the right wing. The pilot reported that there were no preaccident mechanical malfunctions or anomalies that would have precluded normal operation.