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PING.
>> Reporter: IT IS INTERESTING
THAT THE VERY SMALL DETAILS
COULD TURN OUT TO BE VERY BIG
CLUES AS TO WHAT MAY HAVE
HAPPENED IN THE FINAL MOMENTS OR
WHERE THIS AIRCRAFT MAY HAVE
FINALLY ENDED UP.
THE PINGS WE'RE TALKING ABOUT
ARE A RESULT OF THE ACAR SYSTEM.
IT IS LOCATED HERE IN THIS
PARTICULAR COCKPIT OF THE TRIPLE
7 IT IS THIS SCREEN YOU WOULD
USE.
IT IS AN ALTERNATE MEANS OF
COMMUNICATION FOR THE PLANE.
YOU HAVE THE RADIO SYSTEMS, BUT
THIS WOULD BE A WAY TO SEND
TEXTS TO THE GROUND, THE GROUND
TO SEND TEXTS UP, EVEN
NAVIGATION IDEAS.
IT IS ALSO A WAY FOR THE
AIRCRAFT TO SORT OF SEND OUT AN
AUTOMATIC MESSAGE.
IN THIS CASE, EVERY HOUR.
SO AFTER THE PLANE DISAPPEARED
MARCH 8th AFTER IT WENT OFF
RADAR, THE SYSTEM SENT SIX MORE
PINGS.
ONE EVERY HOUR.
IT DIDN'T TRANSMIT ANY
INFORMATION.
IT WAS AS IF SOMEBODY CALLED YOU
ON THE CELL PHONE BUT DIDN'T
SPEAK.
SO THE PLANE DID THAT.
AND THEN THE VERY LAST PING CAME
EIGHT MINUTES AFTER THE ONE
PREVIOUS, WHICH WAS ODD.
BECAUSE IT WAS HITTING ONCE
EVERY HOUR, THEN YOU GET ONE
EIGHT MINUTES LATER.
SO WHAT WAS GOING ON?
THAT'S WHAT THEY'RE TRYING TO
FIGURE OUT.
THEY'RE ALSO TRYING TO FIGURE
OUT WHERE DID THE LAST PING COME
FROM BECAUSE IT IS BELIEVED THAT
MAY HAVE BEEN THE LAST PLACE
WHERE THE AIRCRAFT WAS, TRYING
TO NARROW DOWN THE SEARCH,
FIGURE OUT WHERE THAT PARTIAL
PING CAME FROM.
AND THEN YOU CAN ZOOM IN AND
BEGIN TO SEND ALL YOUR AIRCRAFT
AND ALL YOUR AS MUCH ASSETS
THERE.
THERE'S ONE THEORY, WHEN THE
PLANE RAN OUT OF FUEL,
EVERYTHING ELECTRIC IN THE PLANE
STOPPED, SHUT DOWN.
BUT THERE'S A LITTLE PROPELLER
IN THE BACK THAT POPS OUT AND
MAKES ELECTRICITY BY THE WIND,
SO THE AIRCRAFT DESCENDING
WITHOUT POWER WOULD GENERATE
ELECTRICITY.
EVERYTHING TURNS OUT AGAIN.
SO IT IS THEORIZED MAYBE THE
PLANE RAN OUT OF FUEL, EIGHT
MINUTES LATER, IT IS GENERATING
ELECTRICITY AGAIN, AND THIS ACAR
SYSTEM SENDS ONE LAST PING