CNN The Hunt With John Walsh August 1, 2015 01:06:00
So for the first 40 minutes of this flight, up to that point, everything has been routine. >> mm-hmm, yes. >> everything was routine until now. two minutes after talking with air traffic control, 40 minutes into the flight, the planes transponder goes dark. >> the planes transponder is effectively the instrument by which sends out a signal to air traffic control. it tells you what height its at, which direction, and what speed its traveling. suddenly, this giant 777 is blind to the world. >> and...
Source: archive.org