Aeroflot Flight 4225
An Aeroflot Tu-154B-2, similar to the aircraft involved in the accident
|Date||July 8, 1980|
|Summary||Windshear, loss of airspeed due to thermal currents causing a stall|
|Site||Almaty, Kazakh SSR, Soviet Union|
|Aircraft type||Tupolev Tu-154B-2|
|Flight origin||Almaty International 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. To date, it retains the highest death toll of any aviation accident in Kazakhstan.
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. 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.
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.
- "ASN Aircraft accident Tupolev 154B-2 CCCP-85355 Alma-Ata Airport (ALA)". Aviation Safety Network. Retrieved 25 January 2015.
- "Катастрофа Ту-154Б-2 Алма-Атинского ОАО в районе а/п Алма-Ата (борт СССР-85355), 08 июля 1980 года. // AirDisaster.ru - авиационные происшествия, инциденты и авиакатастрофы в СССР и России - факты, история, статистика". www.airdisaster.ru. Retrieved 2017-04-12.
- "✈ russianplanes.net ✈ наша авиация". russianplanes.net. Retrieved 2017-04-12.
- Gero, David (1996). Aviation Disasters Second Edition. Patrick Stephens Limited. p. 164.