飞行高度层 meaning in English

fl flight level
flight levels
rvsm

Report heading and flight level
报告航向和飞行高度层。
Request winds aloft ( upper winds ) between guangzhou and kun ming fl210
请求广州至昆明之间飞行高度层210的高空风。
With the rapid development of civil aviation and the special situation of our country ' s airspace , there come to be some congestions of air traffic in some airspace
同时,流量控制措施常常导致在起飞前的延迟、飞行中的等待、使用不经济的飞行高度层,改航线和航班、打乱班机时刻等多种负面影响。