What happened
While traveling toward Archer Lake in northern Quebec, the pilot encountered worsening weather conditions. Due to the deteriorating environment, the decision was made to abort the mission and return to Roberval.
During the execution of a turn at a low altitude, the aircraft impacted the surface of Culotte Lake. The impact resulted in one fatality among the passengers, while the remaining three occupants were successfully rescued from the site.
Findings
Investigations into the crash concluded that the accident was caused by pilot error, specifically involving a miscalculation of the distance between the aircraft and the water's surface during the low-altitude turn.