EMERGENCY LOCATOR TRANSMITTER (ELT).

EMERGENCY LOCATOR TRANSMITTER (ELT)

- A radio transmitter attached to the aircraft structure which operates from its own power source on 121.5 MHz and 243.0 MHz. It aids in locating downed aircraft by radiating a downward sweeping audio tone, 2‐4 times per second. It is designed to function without human action after an accident.

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