Search teams for the missing Malaysian airlines flight are confident they've traced the plane's black box, and a ping sound has been detected.
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The search operation is seeking to determine the black box's exact resting place in the southern Indian Ocean before the device's beacons fade.
It's five weeks since flight MH370 went missing.
Today's operation covered an area over 15,000 square miles around 1,450 miles northwest of Perth in Australia.