The Lexington Institute's Loren Thompson says those mishaps usually result from a simple break in the line-of-sight connection between a plane and the satellite that controls it--often when one of the aircraft's own wings maneuvers into the path of the signal.

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In contrast to past hijacking situations, Mr Learmount said it was unusual that police with weapons appeared in sight of the plane's cockpit.

BBC: How to negotiate with hijackers

The jumbo jet experienced turbulence on approach to Toledo and was within sight of the runway when the pilot pulled the plane up and circled the airport, according to reporters on board.

CNN: Air Force One aborts landing, second try successful