Display Unit Autopilot Interface
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FD Button — Activates/deactivates the flight director only.
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AP Button — Engages/disengages the autopilot.
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YD Button — Engages/disengages the yaw damper.
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LVL Button — Engages the autopilot (if the autopilot is disengaged) in level vertical and lateral modes.
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APR Button — Selects/deselects approach mode.
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NAV Button — Selects/deselects navigation mode. Cancels GS Mode if LOC Mode is either active or armed. Cancels GP Mode if GPS Mode is either active or armed. Cancels LOC Mode if GPS Mode is active and LOC Mode is armed.
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HDG Button — Selects/deselects heading mode.
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TRK Button — Selects/deselects track mode.
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IAS Button — Selects/deselects Indicated Airspeed Mode.
- Slower/Faster Buttons — Adjusts the vertical mode reference in Indicated Airspeed Hold Mode.
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VNAV Button — Selects/deselects vertical navigation.
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VS Button — Selects/deselects Vertical Speed Mode.
- Nose Up / Nose Down Buttons — Adjusts the vertical mode reference in Vertical Speed Mode.
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ALT Button — Selects/deselects Altitude Hold Mode.
- Lower Alt/Higher Alt Buttons — Adjusts the vertical mode reference in Altitude Hold Mode.