CNN CNN Newsroom April 3, 2014 19:18:00
Previously searched for sonic transmissions from the flight data recorder. what else could it be looking for if not the all important pinger sound. >> that are is what they are looking for. i'm encouraged to hear them saying this is possible low the most difficult search ever undertaken. we shouldn't deminnish the challenges of trying to find this pinger box or wreckage that might be there from flight 370. it's interesting and if they have made a break. >> authorities have said that false alert could be triggered by whales or noises. how are they caused by whales? >> whales emit noises in a nu...
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