One Last Signal
The prior communication was the last verbal communication from Flight 370, but not the last signal. Ho Chi Minh radar did pick up the plane a minute after the last communication. The records say the plane was still at 35,000 feet, as Captain Zaharie said before, and was traveling at 542 mph. But then, it vanished. Radar systems in Kuala Lumpur and Vietnam could not pick up a signal.