Consequently, during the time the reverse thrust lever for the right engine was being moved forward (to reduce the reverse thrust), captain Shibanov unintentionally moved the throttle control lever for the left engine forward (increasing forward thrust) while moving the reverse thrust lever of the right engine gradually up to the stowed position and remained in that position until the time of colliding with the barriers. The throttle control lever for the left engine was in the position corresponding to the forward thrust setting of roughly 60% of its full rated takeoff thrust, and remained in that position until the flight data recorder (FDR) stopped recording. The crew apparently did not notice the left engine's increase in forward thrust and was unaware the thrust lever had been inadvertently advanced until late in the accident cycle. The flight crew only noticed an abnormality when the cockpit voice recorder (CVR) recorded the following: