Page 42 - Tpl News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Australians that all of the assets or at least a great bulk of the assets were streaming towards that location to start their very hard work. what happens to all the other search areas now? >> they go on hold. they don't go away. all right? so they go on hold. and they work with the most pertinent and the most precious of those -- those zones right now. that's going to be the ping from the chinese. now, that deep zone i talked about a second ago, that tpl could have been picking up the same signal 300 miles away. quite possible in that deep zone. because they're towing down deep. where the chi...

Give more information. because what they appear to be doing is moving this box around and not really explaining why. so they have to explain why to us. that's an interesting question. >> david gallo, i want to bring you in here. as they're moving these assets around and changing the search area, now they have the towed pinger locater out there. how confident are you that the batteries in the black box are even still working, even still pinging? >> that's anyone's guess, john. here's the thing about that. going over an area and not hearing the pinger doesn't mean that the aircraft is not there....

Flight 370. but time is running out for the pinger's battery life. >> what they're trying to do is get ears in the water while the pinger is still going. >> reporter: this is the sound it's listening for. the towed pinger locater, or tpl, is 30 inches long and weighs just 70 pounds. it's towed behind the ship that operates it, in this case the ocean shield, and generally moves at about 3 knots. that means with 150 miles or so to cover, just a sliver of the search area, it will take days. >> it does two things. it gets it down into that level. it also gets it away from a lot of the surface not....

It's a u.s. navy hydrophone or underwater microphone called a towed pinger locater. search teams are counting on it to find the pinger mounted directly on the black boxes from flight 370. but time is running out for the pinger's battery life. >> what they're trying to do is get ears in the water while the pinger is still going. >> reporter: this is the sound it's listening for. the towed pinger locater, or tpl, is 30 inches long and weighs just 70 pounds. it's towed behind the ship that operates it, in this case the ocean shield, and generally moves at about 3 knots. that means with 150 miles ...

Do they have to explain why to us? that's an interesting question. >> david gallo, i want to bring you in here. as they're moving these assets around and changing the search area, now they have the towed pinger locater out there. how confident are you that the batteries in the black box are even still working, even still pinging? >> that's anyone's guess, john. here's the thing about that. going over an area and not hearing the pinger doesn't mean that the aircraft is not there. the tpl is useful if you do hear something. if you don't hear something not that useful. i think at this point, know...