The Scott Aviation aircraft with two crew members and four passengers on board, took off from Montréal, Quebec, for a night instrument flight rules flight to Bromont, Quebec. Upon approaching Bromont, the co-pilot activated the lighting system and contacted the approach. The flight crew was advised that the runway edge lights were out of order. However, the approach lights and the visual approach slope indicator did turn on. The flight crew executed the approach, and the aircraft touched down at 300 feet to the left of Runway 05L and 1800 feet beyond the threshold. It continued on its course for a distance of approximately 1800 feet before coming to a stop in a ditch. The crew tried to stop the engines, but the left engine did not stop. The co-pilot entered the cabin to direct the evacuation. One of the passengers tried to open the emergency exit door, but was unsuccessful. All of the aircraft's occupants exited through the main entrance door. Both pilots and one passenger sustained serious injuries, and the three remaining passengers received minor injuries. The aircraft suffered major damage.