What happened
The aircraft was operating in rain showers when it attempted to land. The runway surface was wet at the time of the event. Upon touchdown, the aircraft touched down between one-third and one-half of the way down the available runway length.
After landing, the pilot applied the brakes in an effort to slow the aircraft. However, the braking action was ineffective. Consequently, the aircraft continued its forward motion along the runway. It departed from the departure end of the runway at a speed of approximately 35 knots.
Following the overrun, the aircraft entered rough terrain and slid for a distance of about 120 feet beyond the end of the runway before coming to a complete stop. The impact caused the landing gear to collapse.