英语词汇“low-altitude alert system”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	low-altitude alert system
释义	low-altitude alert system low-altitude alert system (LAAS) An automated function of ground radar that alerts the controller when a mode C transponder-equipped aircraft on an IFR (instrument flight rules) plan is below a predetermined safe altitude. If requested by the pilot, LAAS is also available in VFR (visual flight rules) mode C transponder-equipped aircraft. LAAS is also an acronym for local area augmentation system.
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low-altitude alert system