The last thing I heard was that the plane did a U turn and disconnected its= transponder. Military radar had it dropping to extremely low altitude and = disappearing for a while. Then it popped up briefly and went back to extremely low altitude.=20 So either it crashed or an really knowledgeable pilot stole the plane. -----Original Message----- From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] On Behalf Of= Tamas Rudnai Sent: Wednesday, March 12, 2014 12:24 PM To: Microcontroller discussion list - Public. Subject: [OT] Vanished Airliner Writing this to this list as I know quite few of you have knowledge on avia= tion. I am just thinking how could the most sophisticated airliner just dis= appear in thin air? Ground control use radar and beacons as they trust in t= hese much better than any other positioning devices, I get that. I also tot= ally understand that the plane was flying in an area that was uncovered by = radar - at least by commercial radars. But the most modern airliner has no = GPS at all on board? Or they do have but just could not send back the posit= ion to the ground control? Tamas Sent from my iPad -- http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/chang= e your membership options at http://mailman.mit.edu/mailman/listinfo/piclis= t --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .