page_title: Aeroflot Flight 7425
section_title: Accident
hierarchical_section_title: Aeroflot Flight 7425 / Accident
caption_attribution_description: English: Flight 7425 photo after crash.
context_page_description: Aeroflot Flight 7425 was a domestic scheduled Karshi–Ufa–Leningrad passenger flight that crashed near Uchkuduk, Uzbek SSR, Soviet Union on 10 July 1985. The crash killed all 200 occupants on board. Investigators determined that crew fatigue was a factor in the accident.
context_section_description: The aircraft was operating the first leg of the flight, and cruising at 11,600 metres (38,100 ft) with an airspeed of 400 kilometres per hour (250 mph), close to stalling speed for that altitude. The low speed caused vibrations, which the aircrew incorrectly assumed were engine surges. Using the thrust levers to reduce engine power to flight idle, the crew caused a further drop in airspeed to 290 km/h (180 mph). The aircraft stalled and entered a flat spin, crashing into the ground near Uchkuduk, Uzbekistan, at that time in the Soviet Union. There were no survivors.
  Flight 7425 remains the deadliest air disaster in Soviet and Uzbek aviation history, the deadliest in Aeroflot's history, and the deadliest accident involving a Tupolev Tu-154.
caption: Wreckage of Flight 7425
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