Afcs Controls - Garmin G3X Pilot's Manual

4) Flight controls - CHECK (verify autopilot servos are disengaged from pitch
and roll controls, and all controls move freely)
5) Elevator trim control - SET FOR TAKEOFF
Before takeoff checklist - Garmin autopilot with GSA 28 servos
and GMC 305 mode controller:
1) Autopilot - ENGAGE (using AP/CWS button, or AP button on mode
controller)
2) Flight controls - CHECK (verify autopilot can be overpowered in both pitch
and roll)
3) AP DISC button - PRESS (verify autopilot disengages and audio alert is
heard)
4) Yaw damper - OFF (if installed) (verify yaw damper disengages and audio
alert is heard)
5) Flight director - SET FOR TAKEOFF (select TO or VS mode or push FD Button
to turn off the Flight Director)
6) Flight controls - CHECK (verify autopilot servos are disengaged from pitch,
roll, and yaw controls, and all controls move freely)
7) Elevator trim control - SET FOR TAKEOFF

AFCS CONTROLS

GMC 305 AFCS CONTROLS
The GMC 305 AFCS Control Unit has the following controls:
HDG Key
1
NAV Key
2
AP Key
3
LVL Key
4
190-01115-00 Rev. K
Selects/deselects Heading Select Mode
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.
Engages/disengages the autopilot
Engages the autopilot (if the autopilot is disengaged
and the aircraft is within the autopilot engagement
limitations) in level vertical and lateral modes
Garmin G3X Pilot's Guide
AFCS
305