What happened
A survey mission departed from Kodinsk at 1400LT, carrying a crew of four, consisting of two pilots and two observers. The aircraft was transporting five fire bombers for the duration of the flight. Approximately two hours after takeoff, the crew identified a fire and proceeded to drop the five fire bombers in two separate intervals. Following the drop, the crew increased engine power while maintaining an altitude between 150 and 200 meters.
During this phase of flight, the engine oil temperature rose to 150 degrees. Five minutes after this temperature spike, the engine suffered a complete failure. The crew attempted to perform an emergency landing, but the single-engine aircraft struck trees measuring approximately 20 meters in height, resulting in a stall and subsequent crash within a forested region. The wreckage was located south of Kezhma, roughly 126 km east of the departure point in Kodinsk.
Findings
- The engine oil temperature reached a high of 150 degrees prior to the loss of power.
- The engine failure occurred five minutes after the observed temperature increase.
- All four occupants managed to evacuate the wreckage safely, though the aircraft was destroyed.