from Baotou Airport due to wing icing, killing all 53 on board and two people on the ground. From 31 March 2008 to 1 April 2008, 21 flights of Yunnan Branch returned unexpectedly due to the dissatisfaction of some pilots with the company's treatment, causing at least 1,500 passengers to be affected by the flight. On 21 March 2022, China Eastern Airlines Flight 5735, operated by a Boeing 737-89P (B-1791), crashed during cruise in a dive in Teng County, killing all 132 on board. References External links China Eastern Yunnan Airlines China Yunnan Airlines (Archive) China Yunnan Airlines (Archive) Defunct airlines of China Airlines established in 1992 Airlines disestablished in 2003 Chinese companies established in 1992 Chinese companies disestablished in 2003