1.   Triple vertical tail surfaces consisted of rudders only, the outer pair carrying trailing-edge servo tabs, while the centre rudder was used purely for trimming purposes.

2.   And the flowing air, in that case, can press hard on one side of the vertical tail of the plane.

3.   Several parts of the tail, including a piece of the vertical tail with the Alaska Airlines logo, an Eskimo, are clearly visible, he said.

4.   The rudder is the moveable vertical tail section that helps direct an airplane from left to right.

5.   The rudder is the vertical tail section that helps move an airplane from left to right.

6.   The rudder is the movable flat panel in the vertical tail section that helps direct an airplane from left to right.

7.   The rudder is the moveable flat panel in the vertical tail section that helps direct an airplane from left to right.

8.   The vertical tail itself is now being examined at a NASA laboratory in Hampton, Va.

9.   Traditional helicopters have a vertical tail rotor to stop the main rotor from spinning the craft endlessly round and round.

10.   A picture published in the paper of a vertical tail piece of the plane clearly showed the U.S. flag.