Aeroflot Flight 4225

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Aeroflot Flight 4225
Tupolev Tu-154B-2, Aeroflot AN1096891.jpg
An Aeroflot Tu-154B-2, similar to the aircraft involved in the accident
Accident summary
Date July 8, 1980
Summary Windshear, loss of airspeed due to thermal currents causing a stall
Site Almaty, Kazakh SSR, Soviet Union
Passengers 156
Crew 10
Fatalities 166 (all)
Survivors 0
Aircraft type Tupolev Tu-154B-2
Operator Aeroflot
Registration CCCP-85355
Flight origin Almaty International Airport
Destination Simferopol Airport

Aeroflot Flight 4225 was a Tupolev Tu-154B-2 that was a domestic scheduled passenger flight from Alma-Ata Airport (now Almaty) in Soviet Kazakhstan to Simferopol Airport in Soviet Ukraine on July 8, 1980. The aircraft reached an altitude of no more than 500 feet when the airspeed suddenly dropped because of thermal currents it encountered during the climb out, causing the airplane to stall before traveling 5 km (3.1 mi) away, crash and catch fire, killing all 156 passengers and 10 crew on board.[1] To date, it retains the highest death toll of any aviation accident in Kazakhstan.[1]


At the time of the accident Alma-Ata was experiencing a heat wave. It was around 00:39 and Flight 4225 took off from Alma-Ata Airport in Soviet Kazakhstan.[1] Only a few seconds after take off, the flight reached 500 feet. The weather was not on the flight's side; the plane reached a zone of hot air and then the Soviet aircraft's airspeed dramatically dropped and the plane was caught in a big downdraft. The Tupolev stalled and plummeted, nose down, into a farm near the suburbs of Alma-Ata. It slid into a ravine, caught fire and disintegrated, killing everyone on board.[2][3]


The Soviet aviation board concluded that the crash was caused by windshear which took place while the aircraft was near its maximum takeoff weight for the local conditions which included mountains.[2][4]

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Coordinates: 43°16′39″N 76°53′45″E / 43.2775°N 76.8958°E / 43.2775; 76.8958