"J. Clarke" wrote:

And a terrorist standing in the aisle is not going to be good for much after
he has fallen the full length of a 747 cabin then had a food service cart
land on him. Airliners are not stressed for aerobatics but a skilled pilot
can nonetheless do things like that when he has nothing to lose by breaking
the airplane.

Or simple aileron rolls would do the job and the 747 is stressed for it:
http://www.svpilots.com/JJ747/B-747_LIMITS.pdf. Terrorist in a blender. Right
side, ceiling, left side, floor. Repeat as necessary.

I would suggest it will be generations before an airliner is high jacked again.
No pilot will ever yield control of the plane until it has been long enough to
forget.

-- Doug