5 Live Drive - A leading underwater search expert says time is running out to find the black box from the missing Malaysian aircraft - BBC Sounds

5 Live Drive - A leading underwater search expert says time is running out to find the black box from the missing Malaysian aircraft - BBC Sounds


A leading underwater search expert says time is running out to find the black box from the missing Malaysian aircraft

David Mearns explains why aircraft tracking devices are so hard to find.

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