Introduction
On a flight departing from Krasnoyarsk-Cheremshanka Airport, the aircraft experienced a critical engine failure shortly after takeoff. The incident resulted in a crash during the subsequent emergency landing attempt, with a high number of fatalities and one serious injury.
Sequence of Events
After takeoff, while climbing to an altitude of 2,040 meters at a speed of 480 km/h, the right engine (engine n°3) suffered an uncontained failure and caught fire. The crew declared an emergency and was cleared to return for an emergency landing. On final approach, the aircraft banked right then nosed down and crashed at a speed of 425 km/h, 3,200 meters short of the runway threshold. The aircraft disintegrated on impact, approximately 11 seconds prior to the intended landing. A passenger was seriously injured, while 110 other occupants were killed.
Probable Cause
Official findings determined that the failure of the right engine was the consequence of a fatigue failure of the first stage low pressure compressor disk due to metallurgical and manufacture defect. Additionally, a fire erupted in the right engine and quickly spread to the right wing and engine n°2 because the crew forgot to close the fuel valve.