Lex, ik bedoelde dit.
staat in:
http://forum.politics.be/showthread....page=158&pp=20
"the Boeing airliners involved were of the “fly by wire” type.
Such aircraft are equipped with a black box that was developed by the technology arm of the Pentagon known as the Defense Advanced Projects Agency (DARPA). Whenever fly by wire aircraft are hijacked, and an attempt is made by the perpetrators to fly the aircraft to an alternate destination, control of the aircraft is automatically transferred to a very covert Federal ground facility, thereby permitting the aircraft to be safely landed at the nearest suitable airport. Once the aircraft is under the command of the Federal ground facility, attempts by the hijackers to regain control of the aircraft by pulling on the control column or throttle levers will prove fruitless. Visual sighting of the hijacked aircraft during such an incident can be accomplished by means of a sophisticated pilotless drone surveillance aircraft, such as the Global Hawk, which has the capability of flying at an altitude of sixty thousand feet. Visual images from the drone are transmitted to the Federal command facility via a communications satellite."
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