Tupolev TU-154 crash, Feb 24, 1999 (61 killed), Wenzhou
Tupolev TU-154 accident on February 24, 1999 near Wenzhou, Zhejiang, China with 61 fatalities. Cause: A self-locking nut installed in place of the...
- Date: February 24, 1999
- Aircraft: Tupolev TU-154
- Location: Wenzhou, Zhejiang, China
- Fatalities: 61
- Phase of flight: Approach and landing
- Cause: A self-locking nut installed in place of the specified castle nut and cotter pin at the elevator pull rod bellcrank loosened, the bolt was lost and pitch control was lost.
A China Southwest Airlines Tu-154M on flight SZ4509 from Chengdu was descending toward Wenzhou when the crew found the control column too far forward. After flaps were lowered the angle-of-attack alarm sounded, and the aircraft entered an uncontrolled nose-down descent into an open field and broke up on impact. All 61 people aboard were killed.