Update on the missing Malaysian Airlines flight MH370: Equipment inside two nearly indestructible boxes aboard the missing Malaysia Airlines plane recorded critical information that would help investigators reconstruct what went wrong.

The flight data recorder and cockpit voice recorder have beacons that are sending out "pings" which searchers could track back to the main wreckage.

But the batteries will run out in about two weeks. Satellite images show debris floating in the southern Indian Ocean, but search crews still have not confirmed it is from the plane.

If they can do that, searchers will calculate where the bulk of the plane may have come to rest on the sea floor - and then go to that area and start listening for the pings. -- AP

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