An emergency locator transmitter was activated at about 10 p.m. in a mountainous area.

"They had an hour and 45 minutes of fuel on board, and an emergency locator transmitter," he said.

It's unclear how many general aviation planes have emergency locator transmitters since they aren't required.

Today the beacon functions are normally fulfilled by the emergency locator transmitter system.

In the United States, small aircraft are equipped with a device called an emergency locator transmitter.

The Coast Guard says the plane had an emergency locator transmitter but it has not been activated.

Older emergency locator transmitters transmit on 121.5 MHz in case of impact.

The result was a U.S. law mandating that all aircraft carry an emergency locator transmitter.

The missing plane was equipped with an emergency locator transmitter, designed to activate in the event of a crash.

It also coincides with the location of the aircraft's emergency locator transmitter and its associated system wiring.

Emergency locator transmitters are the least fun-to-buy avionics, second maybe to transponders.

A 442 Squadron Buffalo flew throughout the night, listening for the aircraft’s emergency locator transmitter.

FAR 91.207 covers the requirement for on-board emergency locator transmitters and it's worth a read.

In three attempts, three different cadets were able to pinpoint the emergency locator transmitter - or get close, anyway.

The emergency locator transmitter on the Twin Otter aircraft activated at 10 p.m.

The float plane is carrying an Emergency Locator Transmitter.

Honeywell built the emergency locator transmitter and there is speculation that the transmitter's battery caused the fire.

Investigation finds fire was caused by lithium-manganese dioxide batteries powering an emergency locator transmitter.

Airbus said it was not so far aware of any overheating incidents involving emergency locator transmitters on its aircraft.

The Emergency Locator Transmitter on the third aircraft had indeed been activated on impact.

It also looked for signs of any charring and other abnormalities on the emergency locator transmitter, and found nothing amiss.

Civil Air Patrol members began searching for it, and signals from the airplane's emergency locator transmitter were detected about 10 a.m. yesterday.

Because the acronym is widely used for Emergency Locator Transmitter, its use is omitted.

The accident prompted Congress to pass a law mandating emergency locator transmitters in all United States civil aircraft.

The ELT, or emergency locator transmitter, activated automatically upon impact if the helicopter crashed.