为减少民用航空飞行事故的发生,各国民航都非常重视飞行事故的调查,而要找到真正原因并不是轻而易举之事。在调查时调查员常常发出这样的感慨:如果能听到事故发生前后机组的谈话以及飞机上发出的各种异响将非常有助于事故原因的分析,为此,从上世纪50年代起民用飞机上开始安装记录飞 To reduce the incidence of civil aviation accidents, civil aviation in all countries attach great importance to the investigation of aviation accidents and finding the real cause is not an easy task. During the investigation, the investigators often sent such a feeling: If you can hear the accident before and after the unit’s talk and the sound of the aircraft issued by a variety of anomalies will be very helpful to analyze the cause of the accident, for this reason, since the 1950s civilian The plane began to install record flying