Primary finding
Probable cause
The pilot's failure to maintain directional control after encountering whiteout conditions in the landing flare.
Investigator assessment
Analysis narrative
The pilot stated the ils approach was '...uneventful to within 2 (feet) of touchdown, when we encountered thick fog and...complete whiteout losing all forward visibility and complete runway environment at touchdown.' the aircraft touched down left of the runway centerline and the left propeller impacted a snowbank at the left side of the runway. The aircraft veered off the left side of runway 8r (7,000' x 150') and skidded to a stop perpendicular to and facing the runway. A weather observation taken 9 minutes after the accident revealed temperature and dew point were both 41 degrees fahrenheit, with visibility 3/16 mile in light drizzle and fog.
Source record
Factual narrative
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