Accident
The aircraft was operating flight X-167 from Semipalatinsk to Karaganda. It was piloted by a crew from the 256th Aviation Detachment, consisting of Commander Yuri Ivanovich Sizyakov, co-pilot Vladimir Lukyanovich Keldyshev, and flight engineer Viktor Vasilyevich Tropin. [2] On board were 29 passengers: 27 adults and 2 children. At Semipalatinsk, the sky was overcast, and it was snowing, with visibility of 5 km, and a northwesterly wind (azimuth 290°) at 5 m/s.
At 18:58 local time, one minute after sunset, the Yak-40 took off from Runway 13/31. After climbing to an altitude of 100 m, the aircraft began to rapidly descend, and at 18:59, it struck a snow-covered field 1,457 m from the runway end, 53 m to the left of its centerline. The impact caused the aircraft to bounce into the air, but after flying another 50 m, it crashed again and exploded. The debris was scattered over an area measuring 220x53 m. All 32 people on board the aircraft perished.
Among the passengers was the women's basketball team from the Kyzylorda Region — 11 players, a coach, and a referee.
Investigation
According to the air traffic controller, when the aircraft reached an altitude of 70–80 m, there was a large flash of flame. Witnesses on the ground reported seeing sparks falling from the aircraft. However, the crew did not communicate during this time. A hole was also found in the left side of the cockpit windshield, leading to the theory that the aircraft had been struck from the ground. However, an examination showed that this hole was not caused by a bullet or artillery shell but resulted from the Yak-40's impact with the ground. No traces of explosives were found in the cockpit. According to the technical investigation, there was no explosion or fire on board the aircraft during the flight. [2]
The commission did not find any signs of material failures in flight that would have definitively led to the crash. The only significant clue was the stabilizer's deviation to +1 – +1.2°, indicating a nose-down position. [2]
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