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Inside 9/11: Who controlled the planes?

submitted by marbles

1 decade 3 years 1 month 2 weeks ago

Why made all four hijacked planes on 9/11 long detours? How did the hijackers know about "radar holes"? How could they conduct key hijacking events simultaneously all within 10 minutes? Who controlled the planes?
/source

According to aviation researchers in 2001: “Most modern aircraft have some form of autopilot that could be re-programmed to ignore commands from a hijacker and instead take direction from the ground . . . .”

Why wasn't this technology used to take control and land the hijacked planes?

Or was this technology actually used by agents on the ground to in effect do the hijacking?