高原航线飘降越障要求和算例分析

Drift Down Obstacle Clearance and Analysis of High Altitude Airlines

由于高原航线地形复杂,航路最低安全高度高,飘降分析复杂。同时针对有些飞行员、签派员、性能人员等对飘降的理解存在一定的偏差,本文对飘降的过程和相关的越障要求进行了解释。并以A319-115机型执行成都-林芝航线为例,探讨了高原航线飘降问题的分析方法和注意事项。

Analysis on drift down is very complicated because of the complicated landform and high MEA for high altitude airlines. Meanwhile, there are some misapprehensions on drift down with pilots, dispatchers and personnel involved in flight performance. The drift down procedures and obstacle clearance are explained in this paper. Taking Chengdu-Linzhi airline with A319-115 airplane as an example, analysis methods and noting items of drift down in high altitude airlines are discussed.