Aviation Dictionary

On this page you will find a searchable and comprehensive alphabetical list of aviation terms. You can help us make it the most comprehensive list in the world. If we have missed anything, click on the ‘send us your word’ button to send us your word, acronym or definition and we will consider adding it to our dictionary.

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Emergency Locator Transmitter. A device, which can either be portable or fixed in the aircraft that transmits a signal in the event of an emergency. Depending on the ELT, it may have to be manually turned on, or in most cases will be automatically turned on after some high impact. There is the possibility that a hard landing could activate an ELT. There are specific time periods to test an ELT on 121.5 MHz

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