新型民用客机投入使用之前,全尺寸的乘客离机试验必不可少.试验的目的在于验证和改进撤离程序,完善乘务员的训练,最终帮助机上人员在紧急情况下迅速而有秩序地逃离飞机.波音公司在1995年初完成了777-200新型客机的全尺寸撤离试验.在这之前,波音已经将这类试验坚持了3O年.但FAA告诉波音,他们沿用的机上人员离机试验程序与实际情况有出入.所以,波音又选来了419名志愿乘客参与了一次新的试验.在分析离机试验录像带时发现,机上 Prior to commissioning the new civilian airliner, full-size passenger off-board testing was essential to test and evacuate the evacuation process and improve cabin crew training, eventually helping flight crew to flee the aircraft quickly and in an emergency. The company completed its full-size evacuation test of the new passenger aircraft, the 777-200, in early 1995. Boeing had held the tests for 30 years before, but the FAA told Boeing that the flight crew’s on-board test procedures and conditions Therefore, Boeing again chose 419 volunteers to participate in a new test.In the analysis of off-camera test tapes found that on-board