Garmin G3X Pilot's Manual page 328

AFCS
NOSE UP/DN
5
Wheel
IAS Key
6
ALT Key
7
VNV Key
8
VS Key
9
YD Key (if installed) Engages/disengages the yaw damper
10
FD Key
11
APR Key
12
1
Active Mode
306
Adjusts the vertical mode reference in Pitch Hold,
Vertical Speed, Indicated Airspeed, and Altitude Hold
modes
Selects/deselects Indicated Airspeed Mode
Selects/deselects Altitude Hold Mode
Selects/deselects Vertical Path Tracking Mode for Vertical
Navigation flight control
Selects/deselects Vertical Speed Mode
Activates/deactivates the flight director only
Pressing once turns on the director in the default vertical
and lateral modes. Pressing again deactivates the
flight director and removes the Command Bars. If the
autopilot is engaged, the key is disabled.
Selects/deselects Approach Mode
2 3 4
12 11 10
GMC 305 AFCS Control Unit
Garmin G3X Pilot's Guide
5 6 7
9 8
190-01115-00 Rev. K