Yak-Service Flight 9633 Crash Footage (With CVR Recording)

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Subtitles credit: https://youtube.com/channel/UCJYi332xcF73W2Hub4pcoeg

Accident Description: https://www.instagram.com/p/CiNNFVBPkzf/?igshid=YmMyMTA2M2Y=

๐—ฌ๐—ฎ๐—ธ-๐—ฆ๐—ฒ๐—ฟ๐˜ƒ๐—ถ๐—ฐ๐—ฒ ๐—™๐—น๐—ถ๐—ด๐—ต๐˜ ๐Ÿต๐Ÿฒ๐Ÿฏ๐Ÿฏ was an international charter flight from Yaroslavl to Minsk, operated by a Yakovlev Yak-42 (Reg. RA-42434) on ๐—ฆ๐—ฒ๐—ฝ๐˜๐—ฒ๐—บ๐—ฏ๐—ฒ๐—ฟ ๐Ÿณ, ๐Ÿฎ๐Ÿฌ๐Ÿญ๐Ÿญ.

The plane carried members of the Lokomotiv Yaroslavl ice hockey team for a match in Minsk. Before takeoff the crew selected flaps at 20ยฐ and the stabilizer at -8.7ยฐ. The runway length available on runway 23 for takeoff was 3,000 metres and V1 speed was calculated to be 190 km/h. However, the correct V1 speed should have been 210 km/h. Weather was fine with wind from 360ยฐ at 3 m/sec, a visibility of 10 km, with significant stratocumulus clouds at a lower limit of 990 m. The temperature was +17.8ยฐC. Takeoff was initiated at nominal engine thrust. At a speed of 185 km/h the nose wheel lifted off the runway but the pitch angle did not increase.

After 6 seconds takeoff mode power was selected. However, the speed momentarily decreased. The crew used additional elevator and trimmed the stabilizer to 9.5ยฐ nose up. The plane still did not become airborne. It travelled past the end of the runway onto the grass, finally lifting off about 400 metres past the threshold. The plane struck a localizer antenna and rapidly attained a 20ยฐ nose-up attitude, reaching a height of 5-6 metres. The plane then rolled left, struck the ground and broke up on the side of the Volga River. 43 people aboard were killed and 2 survived. One of the surviving passengers died 5 days later of his injuries.

๐—ฃ๐—ฟ๐—ผ๐—ฏ๐—ฎ๐—ฏ๐—น๐—ฒ ๐—–๐—ฎ๐˜‚๐˜€๐—ฒ:
It was determined that:
– the crew calculated the V1 speed to be 190 km/h; however this was incorrect as it should have been 220 km/h;
– the copilot had medical issues, he had leg coordination disturbances and the deep sensibility disorders of lower extremities. The medicine Phenobarbital, which has a negative impact on the nervous system, was found in his blood which degraded his performance;
– while the captain had over 1300 hours of experience flying Yak-42 aircraft, he flew the smaller Yak-40 aircraft before that and had more experience in those aircraft. The same applied to the copilot. Both aircraft have a different method of braking and the captain or copilot (it could not be concluded who pushed the brakes) probably held his feet on the pedals during takeoff in a similar manner that he had used on the Yak-40. In the accident he inadvertently activated the brakes while pulling on the controls to lift the nose for takeoff.
The investigators established that there were at least four contributing factors, including a lack of pilot training, the absence of control over the crewโ€™s preparation for flight, the pilotsโ€™ failure to follow standard takeoff procedures and poor coordination between the crew during the takeoff.

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