Date: February 02, 1999
Location: Rui'an, China
Aircraft: Tupolev TU-154
Reg: B-2622
Airline: China Southwest Airlines
Flight No: 4509
Fatalities: 61 : 61

The aircraft was on a flight from Chengdu to Wenzhou when it crashed into a field while on approach to Wenzhou Airport. An improperly installed nut worked its way lose and led to loss of elevator control.