TODAY   |  April 10, 2014

Searchers detect new signal in Flight 370 search

As the search for Flight 370 continues, a new sound was detected this morning from what could be the plane’s data recordings. Searchers have also parachuted down World War II-era listening devices known as “sonobuoys” to aid the search. NBC’s Katy Tur reports.

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>>> let's turn now to more breaking news that we told you about a while ago. the desperate search for malaysia air flight 370. a new sound detected this morning from what could be the plane's data recorders. nbc's katy tur is in kuala lumpur . katy, good morning to you.

>> reporter: hey, matt, it was shaping up to be quite a quiet day today. but that was until an hour ago when they announced another set of pings. this type from a plane. they do believe it to be consistent with a black box . even more encouraging news because as you know, every time they hear a new set of pings they're able to better determine and further determine where that black box and potential wreckage might be under water. they're already searching the smallest water they've been searching yet, 300 square miles . that's quite an area. the australian navy parachuted down 84 world war ii arison nra buoys with listening devices in the water. the benefit of those, they're very quiet. and they will also continue to listen there for well into next week. until ten days after the 30 days battery life on the black boxes . once that is done, they will put the unmanned submarine into the water, bluefin 21, to map the ocean floor . that could take a week. it could take two weeks, it could take three weeks. still no word on how long that will be but a lot of good news coming out of