Originally Posted by
Wodrick
Post #15 "Pitch Trim in CWS"
As far as I am concerned Pitch trim is part of basic Autopilot function in All modes.
The Autopilot always trims the Stabilizer to null the standing elevator deflection.
Not being one of the Chosen few L1011 experts, that may be a bit different due to the lack of elevators.
The L-1011 has elevators, and I don't mean the galley lifts! The L-1011 elevators are attached to the aft spar of the horizontal stabilizer and are positioned by movement of the horizontal stabilizer. When the horizontal stabilizer is full up (+1 degree) the elevators are faired. When the hoirzontal stabilizer is full down (-14 degree) the elevators are full up (+25 degrees).