Accident Sequence
The pilot executed an instrument approach to the destination airport. Upon arrival, the pilot noted that it had been raining and the runway was wet. The wind conditions were reported as gusty, and the prevailing wind direction reversed to a tailwind as the aircraft touched down. The pilot applied maximum braking, but the aircraft began to hydroplane. The aircraft came to rest off the end of the runway. Approximately 15 feet from the end of the pavement, there was an embankment with a drop-off of about 75 feet at a slope of approximately 45 degrees downhill. No skid marks were observed in the area of the departure end of the runway.
Pilot Report
The pilot reported conditions at the time of the accident as wind from 180 degrees magnetic at 20 knots, gusting to 25 knots, moderate turbulence, and no precipitation. The pilot stated no malfunctions of the aircraft or engines prior to the accident.
Performance Data
Performance data provided by the aircraft manufacturer specified a required landing distance of approximately 1,750 feet at a landing weight of 5,000 lbs. and a 10-knot tailwind. According to the chart, this data is applicable to a dry, paved, level surface.