航空运输相对于其他运输方式来讲，其优势在于“安全、快速、舒适、方便”，中国民航在这几个方面都不同程度地存在不足，尤其是由于流量管理方面的各种原因而造成的一些问题一直困扰着民航，如航班延误、航空器在飞行过程中盘旋等待、甚至返航备降等，既造成了经济上的损失， Compared with other modes of transport, air transport has the advantage of being “safe, fast, comfortable and convenient.” Civil Aviation of China has some deficiencies in these areas in varying degrees, especially due to various reasons of traffic management Some problems have plagued civil aviation, such as flight delays, waiting for aircraft to circumnavigating during flight, and even returning home and preparing for losses, which not only caused economic losses,