Aeroflot Flight 7425

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Aeroflot Flight 7425

Wreckage of Flight 7425
Accident
Date	10 July 1985
Summary	Stall due to pilot error and fatigue
Site	Uchkuduk, Uzbek SSR, Soviet Union 42°9′24″N 63°33′20″E / 42.15667°N 63.55556°E / 42.15667; 63.55556Coordinates: 42°9′24″N 63°33′20″E / 42.15667°N 63.55556°E / 42.15667; 63.55556
Aircraft
Aircraft type	Tupolev Tu-154B-2
Operator	Aeroflot
Registration	CCCP-85311
Flight origin	Karshi Airport
Stopover	Ufa Airport
Destination	Pulkovo Airport
Occupants	200
Passengers	191
Crew	9
Fatalities	200
Survivors	0

Aeroflot Flight 7425^{[nb 1]} 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 (148 adults, including 9 crewmembers, and 52 children) on board. Investigators determined that crew fatigue was a factor in the accident.^[2]

Passengers and crew[]

Flight 7425 was operated by a Tupolev Tu-154B-2, registration CCCP-85311. Led by pilot-in-command Oleg Pavlovich Belisov, the cockpit crew consisted of co-pilot Anatoly Timofeevich Pozyumsky, navigator Garry Nikolaevich Argeev, and flight engineer Abduvahit Sultanovich Mansurov. There were five flight attendants in the cabin.^[3]

Accident[]

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.^[2]

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.^[2]

Cause[]

Flight 7425's cockpit voice recorder was destroyed in the crash. Investigators, with the help of psychologists, studied the human factors that led to the accident. They found Flight 7425's flight crew were very fatigued at the time of the crash from having spent the prior 24 hours at the departure airport prior to takeoff. Another factor was inadequate regulations for crews encountering abnormal conditions.^[4]

See also[]

• Aeroflot accidents and incidents
• Aeroflot accidents and incidents in the 1980s

Notes[]

References[]