China Southwest Airlines Flight 4509
B-2622, the aircraft involved in the accident  | |
| Accident | |
|---|---|
| Date | February 24, 1999 | 
| Summary | Improper maintenance, loss of control | 
| Site | Rui'an, Zhejiang, China  27°43′10.2″N 120°39′27.2″E / 27.719500°N 120.657556°E  | 
| Aircraft | |
| Aircraft type | Tupolev Tu-154M | 
| Operator | China Southwest Airlines | 
| Registration | B-2622 | 
| Flight origin | Chengdu Shuangliu International Airport, Sichuan | 
| Destination | Wenzhou Yongqiang Airport, Wenzhou, Zhejiang | 
| Occupants | 61 | 
| Passengers | 50 | 
| Crew | 11 | 
| Fatalities | 61 | 
| Survivors | 0 | 
China Southwest Airlines Flight 4509 (SZ4509) was a domestic flight in China from Chengdu Shuangliu International Airport, Sichuan to Wenzhou Yongqiang Airport, Zhejiang. On February 24, 1999, the Tupolev Tu-154M operating the flight crashed while on approach to Wenzhou Airport, killing all 61 passengers and crew members on board.