MCP Mode Selector Switches
The mode selector switches are pushed to select desired command modes for the
AFDS (Autopilot Flight Director System) and A/T. The switch illuminates to
indicate mode selection and that the mode can be deselected by pushing the
switch again. While a mode is active, deselection can be automatically inhibited
and is indicated by the switch being extinguished.
When engagement of a mode would conflict with current AFS (Automatic Flight
System) operation, pushing the mode selector switch has no effect. All AFDS
modes can be disengaged either by selecting another command mode or by
disengaging the A/P and turning the F/Ds off.
Autopilot Engagement Criteria
Each A/P can be engaged by pushing a separate CMD or CWS engage switch.
A/P engagement in CMD or CWS is inhibited unless both of the following
pilot–controlled conditions are met:
• No force is being applied to the control wheel.
• The STAB TRIM AUTOPILOT cutout switch is at NORMAL.
Only one A/P can be engaged at a given time unless the approach (APP) mode is
engaged. Approach mode allows both A/Ps to be engaged at the same time. Dual
A/P operation provides control through landing flare and touchdown or an
automatic go–around.
In single A/P operation, full automatic flare and touchdown capability and A/P
go–around capability are not available.
The mode selector switches are pushed to select desired command modes for the
AFDS (Autopilot Flight Director System) and A/T. The switch illuminates to
indicate mode selection and that the mode can be deselected by pushing the
switch again. While a mode is active, deselection can be automatically inhibited
and is indicated by the switch being extinguished.
When engagement of a mode would conflict with current AFS (Automatic Flight
System) operation, pushing the mode selector switch has no effect. All AFDS
modes can be disengaged either by selecting another command mode or by
disengaging the A/P and turning the F/Ds off.
Autopilot Engagement Criteria
Each A/P can be engaged by pushing a separate CMD or CWS engage switch.
A/P engagement in CMD or CWS is inhibited unless both of the following
pilot–controlled conditions are met:
• No force is being applied to the control wheel.
• The STAB TRIM AUTOPILOT cutout switch is at NORMAL.
Only one A/P can be engaged at a given time unless the approach (APP) mode is
engaged. Approach mode allows both A/Ps to be engaged at the same time. Dual
A/P operation provides control through landing flare and touchdown or an
automatic go–around.
In single A/P operation, full automatic flare and touchdown capability and A/P
go–around capability are not available.
