What happened
During a nighttime approach to Tiksi under adverse weather conditions, an aircraft experienced a sudden loss of power while flying at an altitude of 300 meters and a speed of 150 km/h. The loss of engine power led to an aerodynamic stall, causing the plane to descend into the waters of Tiksi Bay, approximately 2.5 km from the start of the runway. Of the six people on board, five fatalities were recorded, while one passenger was successfully rescued from the wreckage.
Findings
Investigations into the accident revealed that the engine failure was triggered by mechanical malfunctions involving the cylinders, pistons, and exhaust valves. Additionally, investigators determined that carburetor icing occurred during the final approach, which caused a drop in cylinder head temperature and a subsequent loss of engine power, significantly degrading the aircraft's performance.