Quote Systematically Shut Down News Today : Breaking News, Live Updates & Top Stories | Vimarsana

If one stops working, you go to the second one. so to have a redundant system and both of them not operating, that means it was done by some human being. >> john, you also think if this new information pans out that human intervention is involved here. >> certainly the sequence of events leads one to believe that there was somebody sequentially turning things off in that airplane. i mean, there's just no other conclusion. i agree with several of the previous witnesses saying that. >> john is there an explanation of why a human doing that that is not malicious, concern about some sort of a shor...

Off. >> and you say you can know that definitively why? >> well, because you have two transponders. if one stops working, you go to the second one. so to have a redundant system and both of them not operating, that means it was done by some human being. >> john, you also think if this new information pans out that human intervention is involved here. >> certainly the sequence of events leads one to believe that there was somebody sequentially turning things off in that airplane. i mean, there's just no other conclusion. i agree with several of the previous witnesses saying that. >> john is the...

That's because according to investigators, everything is on the table. in fact, officials now believe the plane might have been sending out electronic signals or pings four to five hours after its radar beacons stops transmitting. tonight we've just learned that u.s. officials believe the radar beacon or transponder was shut down separately from the system that continued sending out the empty pings 14 minutes apart. that could be extremely significant. american investigators telling abc news that the two modes of communication were quote systematically shut down, which makes for a very big hou...