自1998年4月1日零时起,民航总局决定在北京—上海、上海—广州民用航路实施雷达监控条件下的缩小飞行间隔飞行。两架飞机纵向间隔由10分钟(约150公里)的间隔缩小到5分钟(75公里)。缩小间隔后可以扩大这两条繁忙航路空域的容量,增大空中流量,提高飞行正常率。航空公司可以降低消耗,增大效益。与此同时,航路雷达和甚高频通信的覆盖增强了航路飞行安全的保障能力。北京—上海和上海—广州航路实现雷达监控条件下缩小飞行间隔飞行,这是继1995年10月1日北京—广州航路实现雷达监控下缩小飞行间隔,1997年12月30日北京首都机场终端区实现雷达管制的又一民航 Since midnight April 1, 1998, the Civil Aviation Administration of China decided to reduce the flying interval flight under the radar monitoring conditions of the Beijing-Shanghai, Shanghai-Guangzhou Civil Air Routes. The longitudinal separation between the two aircraft is reduced by 10 minutes (about 150 kilometers) to 5 minutes (75 kilometers). After the interval is shortened, the capacity of these two busy airspaces can be expanded to increase the air traffic and increase the normal flight rate. Airlines can reduce consumption and increase efficiency. At the same time, the coverage of en route radar and VHF communications enhanced the safety of flight routes. Beijing-Shanghai and Shanghai-Guangzhou route to reduce the flight interval under radar surveillance conditions, which is the second in 1995 after the Beijing-Guangzhou route to achieve radar surveillance to reduce the flight interval, December 30, 1997 Beijing Capital Airport Terminal Area Another civil aviation to achieve radar control