据波音公司公布的1987～1996年全球民用航空重大事故统计(图1),可控飞行撞地(CFIT)事故共发生36起,占全部重大事故的26.5%,但造成的死亡人数却为各类事故之首,达2396人之多.实际上,自70年代中期,FAA颁布有关安装近地告警系统(GPWS)通告,以及70年代末国际民航组织向航空公司推荐安装GPWS以来,CFIT事故已呈明显下降趋势.人们有理由相信,航空安全设备的更新和使用,特别是 According to statistics released by the Boeing Company from 1987 to 1996 (Figure 1), a total of 36 CFIT accidents occurred, accounting for 26.5% of all major accidents, but the death toll was First as many as 2396. In fact, since the FAA issued a notice in the mid-1970s concerning the installation of the Near Field Alert System (GPWS) and the recommendation by the ICAO to install GPWS to airlines in the late 1970s that the CFIT accident had occurred There is a clear downward trend.People have reason to believe that the update and use of aviation safety equipment, especially