An Australian navy ship picked up signals with the same frequency as those emitted by the missing plane's black boxes in the northern part of the search area, officials announced Monday (April 7), according to CBS News. The ship Ocean Shield heard the pings from a towed pinger locator. The first series of pings lasted two hours and 20 minutes, and a second signal lasted for 13 minutes.
A Chinese ship also reported hearing pings consistent with a plane's recorder signals on Friday and Saturday (April 4 and 5), according to Xinhua, China's official news agency. This ship heard pings about 345 miles (555 kilometers) away from those detected by the Australian ship.
Awaiting confirmation
But investigators have yet to confirm the pings came from the missing aircraft. Sea life (such as whales) and shipping noise can trigger false alerts. Last week, a British Royal Navy ship called the H.M.S. Echo detected signals that sounded like those from a black box, Australian officials reported, but the signals were false, according to The New York Times.
The Australian and Chinese ships will attempt to detect the pings again. If they do, they will probably deploy underwater robots to search for plane wreckage on the seafloor, a mission that could take many days, investigators said. The black box pinger has a range of only a few miles. And the black box itself is small and doesn't float, so it could be tough to locate.
Finding the flight recorders and the plane's wreckage would provide confirmation that the flight crashed, but the recordings themselves may not be able to resolve the causes of the crash.
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