“十一五”以来,民航基础设施得到了极大改善,航班量也随之突飞猛进大幅增长。然而民航业内保障航班正常的能力和水平却未能紧跟发展脚步,导致航班延误现象增多。2010年上半年的航班正常率首次跌破80%,只有76.89%,下半年的形势同样不容乐观。航班延误的成因相当复杂,空中交通流量管理是重要影响因素之 Since the 11th Five-Year Plan, the civil aviation infrastructure has been greatly improved, and the volume of flights has also risen sharply and dramatically. However, the normal capacity and level of flight safety in the civil aviation industry failed to keep pace with the pace of development, resulting in an increase in flight delays. For the first time in 2010 the normal rate of flights below 80% for the first time, only 76.89%, the second half of the situation is also not optimistic. The causes of flight delays are quite complicated and air traffic flow management is an important factor