Locator Pinger News Today

The plane under water? first, they will likely listen for it. >> this is a hydrophone. >> reporter: all commercial airplanes are required to carry pingers. underwater locator beacons attached to the black boxes. they emit a ping once a second. james coleman is a senior hydrographer a company that makes technology used just for this purpose. >> its an underwater microphone. youre going to put it together and tow it behind the vessel and use it to listen for the locator pinger. >> reporter: but un...

Of a company which makes that underwater locator pinger that everybody is searching for. he also got to hear and confirm the first set of pings detected by australian search teams. so chris, i know earlier this week you told cnn you were extremely confident the sounds were from the flights black box. now search teams have reported hearing four pings. is there any doubt in your mind that sound is coming, in fact, from flight 370? >> no, theres no doubt. the acoustic signature of the beacons and t...

Batteries are completely dead because that bluefin-21 could emit some sounds that could screw up the towed locator pinger? >> right. its not possible that were going to hear another one. its a large area to search and its going to take some time but at least its not as large as it used to be. >> is four pings enough to find this box? >> i think they have stated the more the better. so -- >> they have four. one for two hours, one for 15 minutes, two for five or six minutes. is that enough, within...

Theyre searching in the right location for the missing plane. the reason that theyre so confident is that theyve actually picked up signals again which they believe are from the black boxes of the aircraft. the australian ship ocean shield heard the signals again tuesday afternoon and evening while dragging a locator pinger from the u.s. in the search area west of perth, australia. the signals were in the same area as those detected at the weekend. and those sounds have now been analyzed. and au...

Hours. the australian ship heard the signals tuesday afternoon and evening while dragging a locator pinger from the u.s. the signals were in the same area as those detected over the weekend and those sounds have been analyzed and authorities think its the recorder. >> satellite issues. >> thank you. well check back again. >> here is the thing, four pings, 3 1/2 mile radius. they dont want to drop the submersibles down until they get more of a tighter area. but its very tempting. its tempting cau...

The man responsible for spearheading this multinational search effort, briefing reporters alongside the australian defense minister, delivering the news that they so far have been unable to reacquire that signal. take a listen. >> the towed locator pinger work continues. there have been no further contacts with any transmission, and we need to continue that for several days, right up to when the point at which there is absolutely no doubt that the pinger batteries will have expired. >> reporter:...

Yesterdays report from angus houston is the most recent report we have. its a positive contact. were out there again today, seeking to enhance that contact. [ inaudible question ] thats what were using, isnt it? >> the towed locator pinger work continues. there have been no further contacts with any transmission. and we need to continue that for several days. right up to the point of which theres absolutely no doubt that the pinger batters will have expired. so it will be several days more. now,...

This aircraft. [ inaudible question ] yesterdays report from angus houston is the most recent report we have. its a positive contact. were out there again today, seeking to enhance that contact. [ inaudible question ] thats what were using, isnt it? >> the towed locator pinger work continues. there have been no further contacts with any transmission. and we need to continue that for several days. right up to the point of which theres absolutely no doubt that the pinger batters will have expired....

74 feet long and 43 feet wide. what makes it credible? its location, 75 files that appeared from earlier images. and a visual spotter doing a flyover in an australia plane saw several small objects floating within the defined search area. all this as the clock continues to tick on the locator pinger attached to the planes black box. [ clicking" ]. >> it appears ominous now as the battery life on this device is set to run out in less than 14 days. so there is no doubt that those scouring the seas...