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crash locator beacon
avia.	应急定位信标机; 失事飞机定位信标; 失事位置信标
crash-locator beacon
tech.	应急定位信标; 失事定位信标 (飞机)
English thesaurus
crash locator beacon
avia., Canada	A generic term describing equipment that broadcasts distinctive signals on designated frequencies and, depending on application, may either sense a crash and operate automatically or be manually activated. An ELT may be any of the following: a automatic fixed ELT ELT(AF); b automatic portable ELT ELT(AP); c automatically deployable ELT ELT(AD); d survival ELT (ELT(S))
mil., logist.	An automatic emergency radio locator beacon to help searching forces locate a crashed aircraft. (FRA)