2008年3月31日,东航云南分公司从昆明飞往大理、丽江、版纳、芒市、思茅和临沧六地共18个航班在飞抵目的地后以“无法降落”为由返航,致千余名旅客滞留机场。东航声称返航系天气原因,但当天其他航空公司航班则正常降落。有消息称返航实因飞行员不满待遇而采取的行动,名为集体返航,实际上是一种集体罢飞。 March 31, 2008, Eastern branch of Yunnan branch from Kunming to Dali, Lijiang, Banna, Mans, Simao and Lincang a total of 18 flights to arrive after the destination to “unable to land ” on the grounds of return , Leaving more than a thousand passengers stranded in the airport. China Eastern claimed that the reason for the return of the weather, but the day the other airline flights landed normally. It is reported that the return flight was a result of the pilots dissatisfied with the action taken, called the collective return, is actually a collective strike.