Background
The pilot was contracted to transport tissue from Spartanburg to Charleston, South Carolina. Before departing on the positioning flight, the pilot received a briefing from Flight Service Station indicating a severe thunderstorm watch covering South Carolina and a thunderstorm east of Greer that was moving east and deteriorating. While taxiing to takeoff, the pilot was informed that the thunderstorm appeared to be over the destination airport; Greer Approach Control also advised that the thunderstorm was over the destination airport.
Flight and Approach
The flight continued despite the weather information. During the approach, the pilot reported increasing rain intensity, and a line service employee on the airport confirmed the increasing intensity. The pilot stated that he landed approximately one-quarter of the way down the 5,203-foot-long runway but did not apply the brakes until the halfway point.
Accident Sequence
The airplane rolled off the departure end of the runway, down an embankment, and came to rest against a guardrail. Postcrash examination of the brakes found no evidence of preimpact failure or malfunction. The pilot was the sole pilot of an on-demand air taxi operation.