Event Description
During a training flight, the crew completed seven approaches and landings without incident. While executing an eighth approach in good weather conditions, the instructor perceived a drop in admission pressure on the right engine. Without coordinating with the rest of the crew, the instructor decided to shut down the right engine and feather its propeller. To compensate for the loss of power, the instructor directed the flight engineer to increase power on the left engine. However, the flight engineer inadvertently shut down the left engine at the same time the right engine was being shut down, resulting in a dual engine failure. Faced with this situation, the pilot-in-command attempted an emergency landing. The aircraft crash-landed in a field near Bykovo Airport. The aircraft was damaged beyond repair, and three crew members sustained injuries.
Probable Cause
According to the official findings, the accident was the consequence of the combination of the following factors: poor flight preparation, lack of crew coordination, lack of interaction between the instructor and the rest of the crew, and irresponsible actions on the part of the flight engineer.