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Last updated: 18 January 2019
Date:Wednesday 24 February 1999
Type:Silhouette image of generic T154 model; specific model in this crash may look slightly different
Tupolev Tu-154M
Operator:China Southwest Airlines
Registration: B-2622
C/n / msn: 90A-846
First flight: 1990
Total airframe hrs:14135
Engines: 3 Soloviev D-30KU-154-II
Crew:Fatalities: 11 / Occupants: 11
Passengers:Fatalities: 50 / Occupants: 50
Total:Fatalities: 61 / Occupants: 61
Aircraft damage: Damaged beyond repair
Location:Ruian (   China)
Phase: Approach (APR)
Nature:Domestic Scheduled Passenger
Departure airport:Chengdu Airport (CTU/ZUUU), China
Destination airport:Wenzhou Yongqiang Airport (WNZ/ZSWZ), China
The aircraft was on a flight from Chengdu to Wenzhou and was approaching Wenzhou when, at 1000 m, the flaps were extended. At that moment, the aircraft suddenly pitched down and dove into the ground out of control. The Tupolev crashed into a farm field and exploded, causing a 200x100 feet hole in the ground. Several farmers were injured by the flying debris.

Probable Cause:

PROBABLE CAUSE: A self-locking nut, other than castle nut with cotter pin as specified, had been installed at the bolt for connection between pull rod and bellcranck in the elevator control system. The nut screwed off, resulting in bolt loss, which led to the loss of pitch control.

Wrong installation of parts

Loss of control

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photo of Tupolev Tu-154M B-2622
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This map shows the airport of departure and the intended destination of the flight. The line between the airports does not display the exact flight path.
Distance from Chengdu Airport to Wenzhou Yongqiang Airport as the crow flies is 1654 km (1034 miles).
Accident location: Global; accuracy within tens or hundreds of kilometers.

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Tupolev Tu-154

  • 1026 built
  • 53rd loss
  • 28th fatal accident
  • 15th worst accident (at the time)
  • 23rd worst accident (currently)
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  • 7th worst accident (at the time)
  • 8th worst accident (currently)
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