The L-1011 uses a flying horizontal stabilizer with geared elevators. The entire horivontal stabilizer moves providing both primary and trim, pitch control. The geared elevators move at a constant rate with the horizontal stabilizer. When the nose of the horizontal stabilizer is full up (+1 degree) the elevators are faired, when the horivontal is fully down (-14 degrees) the elevators are up 24 degrees. The geared elevators provide addtional lift at lower speeds.