What happened
A scheduled service flight traveling from Moscow-Vnukovo Airport toward Bratsk, with a planned stop in Omsk, experienced an incident during its arrival at Bratsk Airport. Upon approaching the destination, the crew encountered visibility restrictions caused by intense rainfall.
Immediately following touchdown, the crew engaged the thrust reversers on all three engines of the aircraft type. During the deceleration process, the plane traveled approximately 800 meters before beginning to drift toward the left side of the runway. Despite efforts by the pilot-in-command to correct the directional deviation, the aircraft continued to travel for an additional 526 meters before exiting the paved surface. The plane moved several dozen meters across soft terrain before coming to a complete stop, at which point the fuselage split into two sections. There were zero fatalities and zero injuries among all occupants.
Findings
Investigations determined that the accident was driven by the loss of rudder effectiveness when operating at maximum reverse thrust. The specific design characteristics of the aircraft rendered it uncontrollable on the wet runway surface under these power settings.