Previous circumstances
Ilyushin Il-76TD registration RA-76588 performed cargo flight RUR9633 from Moscow to Taiyuan with intermediate landings in Norilsk and Bratsk. The weather at Chkalovsky airfield was as follows — fog with visibility of 500–900 meters, vertical visibility of 70–80 meters, temperature +8 °C. [1]
The plane was prepared for departure and, according to the loading documents, there were 40.2 tons of cargo on board. The total take-off weight of the aircraft was 191.9 tons, but in fact the cargo was not weighed properly, and in fact the actual take-off weight of flight 9633 was approximately 204 tons, which was 14 tons higher than the maximum permissible weight. The crew knew about the overload, but decided to take off; in addition, the pilots did not calculate the alignment of the aircraft and also did not draw up a scheme for the necessary placement of cargo in the aircraft. Due to the incorrect alignment of the aircraft, problems subsequently arose with the stability and control of the aircraft. [3]
Takeoff, disaster
The flaps were set at 30°, the slats at 14°, and the stabilizers were at -5.4°. The plane began to accelerate along the runway and at a speed of 290 km/h, after a run-up of 2700 meters, the landing gear was raised and flight 9633 broke away from the runway. But immediately after takeoff, the plane began to list to the left and, to compensate for this, the FAC rejected the steering wheel to the right, forming a right roll of 7 °. The overloaded aircraft barely coped with such a load. At an altitude of 23 meters, the pilots shifted the stabilizer from -5.4 ° to -3.9 ° to dive without using the elevator to compensate, although it is strictly forbidden to control the stabilizers on takeoff. After the stabilizer was shifted, the aircraft stopped gaining altitude and began to descend. The commander pulled the steering wheel, but disaster was already inevitable.
At 08:53 MSK flight RUR9633 crashed into trees at 930 meters from the end of the runway, continued to decline and at 1460 meters from the end of the runway collapsed into the forest and completely collapsed. All 10 people on board the plane (8 crew members and 2 passengers) were killed. A memorial was erected at the crash site. [4]
