Incident Overview
On approach to Bratsk Airport, the flight crew of a scheduled passenger service from Moscow-Vnukovo to Bratsk, with an intermediate stop in Omsk, encountered limited visibility due to heavy rain falls. The aircraft touched down on the runway.
Sequence of Events
One second after touchdown, reverse thrust was activated on all three engines. The aircraft rolled for approximately 800 meters before it began to veer to the left. The pilot-in-command attempted to counteract the deviation, but the aircraft continued rolling for another 526 meters, at which point it veered off the runway. It rolled a few dozen meters on soft ground before coming to rest. The aircraft was broken in two.
Occupant Status
All occupants escaped uninjured.
Probable Cause
The official investigation determined the probable cause to be the uncontrollability of the aircraft on a wet runway due to the complete loss of rudder efficiency at the maximum reverse engine thrust, attributed to the design characteristics of the aircraft.