摘要
根据我国民航近１０年来发生的飞行事故调查材料，总结了飞行事故与能见度的关系，分析了造成事故的能见度条件的某些特征和原因，着重讨论了在飞机着陆阶段能见度突变的某些规律，提出了一些避免低能见度事故的建议。
A relation between the flight accident and the flight isibility is obtained after the investigation of the flight accidents of the civil aviation in China during the past 10 years．Some features and eauses of the poor visibility leading to flight accidents are analysed and the sudden changes of visibility during approach are discussed．A suggestion of avoiding this kind of flight accidents is put forward.
关键词
飞行
能见度
突变机制
斜视能见度
消光系数
：Flight visibility；Mechanism of sudden changes；Approach visibility；Weakening coefficient of rays.
