CNN Forensic Files March 25, 2014 08:48:00
Able to wrest control back of that jet? >> well, were in heavy speculation here, but let me tell you that an aircraft on autopilot will fly on its last heading or on program waypoints, which is in the flight management system, if that was so programmed, for as long as its got fuel. and then when the fuel runs out, it will come down. and there are two famous examples of that. there was the helius flight in athens in greece, where the pilots became incapacitated and the aircraft just flew on autop...
Source: archive.org