[Corrected audio issues] Aidan Monaghan: Were the Planes Remotely Guided on 9/11?

[[[ This version corrects/removes the audio issues. ]]] Electrical Engineer tracks down the answers to questions that most of us wouldn’t even think to ask: What were the capabilities of the GPS guided autopilot flight control systems on Boeing 757/767’s navigation prior to 9/11? How about its performance on 9/11?What was the capability to remotely deliver flight plan waypoints to aircraft flight management systems before 9/11? And what was the history of remote "backdoor" accessibility to Bo...