Approach Change
The pilot of aircraft N7846Q initially planned an approach to Runway 17 but changed to Runway 35 after being informed by another aircraft that Runway 35 was the active runway.
Wind Conditions
Two witnesses reported that the winds at the time were from the east. One witness stated the wind was 5 to 7 mph, while the other described it as light and variable. A witness who reported winds from the east noted that upon returning to the airport 45 minutes later, the winds had increased and were from the south.
Landing and Runway Overrun
The pilot reported that an approach speed of 95 knots was flown, but the ground speed seemed fast. A witness stated that N7846Q touched down over halfway down the runway. After touchdown, the pilot observed a tailwind indicated by the windsock and, realizing there was insufficient remaining runway to execute a go-around, applied the brakes. The aircraft rolled off the end of the runway and into a culvert.
Physical Evidence
Skid marks were found on the runway starting near the touchdown point estimated by the witness and continuing off the end of the runway.