CNN The Situation Room April 25, 2014 21:20:00
Transmitters on board the missing many. they are supposed to send locators out on impact. not one burst was sent from flight 370. could the possible reasons why these didn't work lead us closer to finding out what happened? it's one of the most baffling questions in an already con founding mystery. why didn't any emergency beacons send a distressed signal? they are called elts. and a senior aviation source tells cnn there were four of them on the plane. >> emergency locator transmitter is a small radio transmitter that sends a signal detected by satellites in the event of an airplane crash. >>...