My first post and sorry I haven't read all previous.
I was wondering is it possible the signals from MH370 could be replicated by another party on another aircraft while 370 diverts to wherever it is now.
I remember getting a Tcas RA ONCE due to a person on the ground calibrating a transponder, to us it looked like an aircraft was coming up from beneath at a very fast pace and we got an RA but there was nothing there.
Equipment could be used to show it went to 45,000 when it actually didn't or that the signal was a decoy.