You've heard time is quickly running out in the search for missing Malaysia Airlines Flight 370. Now, Australia's prime minister says the signal from the plane's black boxes is "rapidly fading."
According to ABC, officials are confident that crews are getting closer to the missing plane's black boxes after several pings were heard off the coast of Australia earlier in the week.
NBC noted Friday the search for the flight recorders has shifted to a much smaller area off the coast of Australia.
"We have very much narrowed down the search area, and we are very confident that the signals we are detecting are from the black box on MH370." (Via CBS)
But if the batteries are still running, they won't be for much longer. The BBC reports searchers haven't detected any pings since Tuesday.
The search for pings miles underwater comes more than a month after the airliner first disappeared while en route to Beijing. CNN points out the batteries powering the black boxes normally only have a shelf life of about 30 days.
Once the signals stop completely, CNN reports search crews will send down an unmanned submarine that uses sonar to map the ocean floor.