There was strong taper on the horizontal surfaces and a large cut out in the elevators to allow rudder movement.

Boeing still does not acknowledge that such a rudder movement occurred, and the safety board has not reached a conclusion.

The elevators were more rounded, and well separated to allow rudder movement.

As airspeed increases, the system allows less and less rudder movement.

The elevators have a cut out for rudder movement as the latter extends down to the keel.

They carried separate elevators with a cut-out for rudder movement.

The empennage was conventional, the one piece elevator having a cut-out for rudder movement.

Its elevators were unbalanced and divided to allow rudder movement.

There is not supposed to be any rudder movement a pilot can command that will rip off the tail.

But investigators think reversals occur when a pilot calls for a rudder movement that is large or sudden.