飞行事故及事故征候的发生是多种因素综合影响的结果。主要原因有:1.飞行人员的人为失误;2.飞机方面的因素,如座舱设计不符合人的生理心理特点,仪表和信号不利于向飞行员迅速而正确地传达信息等;3.环境因素,如气候变化无常,风切变和鸟撞等。在以上三个原因中,由人为失误导致的飞行事故所占比例最大。美国1985～1995年商业飞行事故中的58.1％是由人为失误引起。有些事故即使是因飞 The occurrence of flight accidents and incidents is the result of a combination of many factors. The main reasons are as follows: 1. Man-made errors of pilots; 2. Aircraft factors, such as cockpit design does not meet the physiological and psychological characteristics of people, instrumentation and signals are not conducive to pilots to quickly and accurately communicate information; 3. Environmental factors, Such as climate change, wind shear and bird strike. Among the above three reasons, flight accidents caused by human errors accounted for the largest proportion. 58.1% of the U.S. commercial flight accidents between 1985 and 1995 were caused by human error. Some accidents even due to fly