of flight 370. aviation sources in malaysia are giving cnn a more detailed analysis of the final flight path taken by the missing jetliner. we re also confirming the plane was equipped with four emergency locator transmitters designed to send a signal to a satellite in the event of a crash or contact with water. now, no one can explain why those elts apparently failed to activate. tamina udas is live from kuala lumpur this morning. good morning. reporter: good morning, alison. we re getting information in bits and pieces, but what we know right now is this particular plane had four ltss in this plane, one in the rear door, in the front door, in the cockpit and the fuselage. so, really, one of those should have gone off, but they didn t, and a lot of people here are asking why. this question was posed to authorities here as well just a few days ago, and they said that
welcome back. we have news just into us here on the hunt for missing malaysian air flight 370. the plane actually had four emergency locator transmitters and according to the sourt it is ord that the transmitters didn t go off or activate. so four des pratt families only add to their agony because i want to show you this. heartbroken families here on their knees praying, sobbing, pegging for answers at a prayer vigil today. they have endured 43 days offing a any. we will talk about the search here for evidence for wreckage,
direction. the aircraft at that point wasn t going through a sort of a structural mechanical issue that was causing it to rapidly lose altitude in any way. it was able to make a controlled turn and then make a controlled climb, and then sustain that climb for 20 minutes before making a controlled descent to about 4,000 feet out over on the other side of the malaysian peninsula. so it s useful information for investigators. how much further forward does it take them, really they say they need the black box to complete the picture, erin. interesting that nick is using the word control for the ascent to 39,000 and the descent to 4,000 feet. nick, you have also learned the plane was equipped with the four emergency locator transmitters. i know people assume it might have been. you were actually able to confirm this. these are designed to transmit a plane s location to emergency satellites when they re triggered by a crash. ie if it lands in the ocean or something. they should have been t
airline did in terms of all of the service. hold on for a moment. i want go to back to perth, a t austral australia. geoffrey anonymous is standing by, editor in chief of airlinerating airlineratings.com. what do you make of the poor emergency locator transmitters? when the plane disappeared, whether it went in the water, whether it crashed or whatever. there was no indication from not one of them that there was a problem. indeed, wolf. this is just one more facet of what is just an extraordinary mystery. at every twist and turn, we appear to have something that we ve never come across before. we ve never lost an airliner for seven weeks. yes, it does raise questions about the maintenance of those items on the boeing 777. that airplane was delivered in 2004. i m not exactly sure how often these have to be checked to
radar information? possibly. i m surprised we haven t heard more from them. if you re within 160, maybe even 200 miles from land, a civilian or possibly military radar should be able to pick you up at that range. if you re farther out than that, it s not likely that the air traffic control radar will pick you up. but the difference between vietnamese and malaysian air space is more of an administrative line than it is a technical line in the sand. john, i want to ask you about the many being equipped with four emergency locator transmitters. they were not picked up. they were supposed to be picked up if they made contact with the land or water. well, they are radio beacons that, given certain circumstances, are just like the pinger. they have a battery. they start transmitting a sound, a signal over a certain area just for beacons but normally