L-1011 Autoflight:: Engage-Lever CMD (22-22)

An autopilot may be engaged in command at any time after takeoff, however, only one autopilot may be in command at a time unless the approach/land (A/L) mode is selected.

When an engage lever is placed to command and no modes are selected, the Aircraft will respond exactly as if control wheel steering (CWS) had been engaged. Command and control wheel steering are the same until a pitch or navigation mode is selected.

When only a pitch command mode is engaged, roll will still be control wheel steering. This is also true with only a roll mode engaged. Remember, in order to have pitch and roll operate in command, both a pitch and roll mode must be engaged.

Automatic pitch trim is provided during operation in all of the pitch axis modes when either autopilot is engaged in the basic (CWS) or command (CMD) configurations. The automatic trim system acts to relieve any load on the autopilot servers to prevent transients when the autopilot is either manually or automatically disengaged. There are two automatic pitch trim systems and at least one must be operative in order to engage either autopilot. A manually controlled electric pitch trim system is also provided; however; this function is disabled when either autopilot channel is engaged, except when a fore or aft force is applied to the control wheel during CWS operation. Manual trim inputs can then be used to reduce the force, as desired.