Aeroflot Flight 7425
An Aeroflot Tupolev Tu-154B-2 similar to the one involved in the accident is seen here at Zürich Airport in 1982.
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| Accident summary | |
|---|---|
| Date | 10 July 1985 |
| Summary | Pilot error |
| Site | Uchkuduk, Uzbek SSR, Soviet Union Lua error in package.lua at line 80: module 'strict' not found. |
| Passengers | 191 |
| Crew | 9 |
| Injuries (non-fatal) | 0 |
| Fatalities | 200 (all) |
| Survivors | 0 |
| Aircraft type | Tupolev Tu-154B-2 |
| Operator | Aeroflot |
| Registration | CCCP-85311 |
| Flight origin | Karshi Airport |
| Stopover | Ufa Airport |
| Destination | Pulkovo Airport |
Aeroflot Flight 7425[nb 1] refers to a Tupolev Tu-154B-2, registration CCCP-85311, that was operating a domestic scheduled Karshi–Ufa–Leningrad passenger service under the airline's Uzbekistan division, that crashed near Uchkuduk, Uzbek SSR, Soviet Union, while en route its second leg. The crash killed all 200 occupants on board.[2]
Description of the accident
The aircraft was covering the second leg of the flight, cruising at an altitude of 11,600 metres (38,100 ft) with an airspeed of only 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 among the 191 passengers and the 9 crewmen.[2]
It is the deadliest air disaster in Soviet and Uzbek aviation history, and as of February 2012[update] has the highest worldwide death toll of any 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 aviation incident. Their findings were that Flight 7425's flight crew were very fatigued at the time of the crash due to their having to spend 24 hours at the departure airport prior to takeoff. Another factor in the crash was inadequate regulations for crews encountering abnormal conditions.[3]
See also
Notes
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- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 Accident description at the Aviation Safety Network. Retrieved on 19 February 2015.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
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- Pages with reference errors
- Use dmy dates from July 2014
- Articles containing potentially dated statements from February 2012
- Aviation accidents and incidents in 1985
- Airliner accidents and incidents caused by pilot error
- Aviation accidents and incidents in the Soviet Union
- Aviation accidents and incidents in Uzbekistan
- Aeroflot accidents and incidents
- Accidents and incidents involving the Tupolev Tu-154
- 1985 in the Soviet Union
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