Garmin G5 Install Manual & Pilot's Guide
190-02072-00 Rev. E 177
Pilot's Guide
Installation Manual Pilot's Guide Appendix Index
2.9 AUTOMATIC FLIGHT CONTROL SYSTEM
(OPTIONAL)
NOTE: The approved Pilot’s Operating Handbook (POH) always supersedes
the information in this Pilot’s Guide.
NOTE: Refer to the approved Pilot’s Operating Handbook (POH) for emergency
procedures.
NOTE: The G5 flight director does not support VOR, LOC, and GS modes.
NOTE: A GMC controller is required for G5 AFCS functionality.
2.9.1 AFCS SYSTEM ARCHITECTURE
An Automatic Flight Control System (AFCS) is typically comprised of two major
components: A Flight Director (FD) and Autopilot servos. The Flight Director provides
pitch and roll commands to the autopilot servos. These pitch and roll commands are
displayed on the PFD Page as Command Bars. When the Flight Director is active the
pitch and roll commands can be hand-flown by the pilot or when coupled with the
autopilot, the autopilot servos drive the flight controls to follow the commands issued
by the Flight Director. The Flight Director operates independently of the autopilot
servos, but in most cases the autopilot servos can not operate independent of the
Flight Director.
2.9.1.1 AUTOPILOT AND YAW DAMPER OPERATION
The autopilot and optional yaw damper operate the flight control surface servos
to provide automatic flight control. The autopilot controls the aircraft pitch and roll
attitudes following commands received from the flight director. Pitch, Roll, and Yaw
(if installed) autotrim provides trim commands to each servo to relieve any sustained
effort required by the servo(s). Autopilot operation is independent of the optional yaw
damper.
The optional yaw damper reduces Dutch roll tendencies, coordinates turns, and
provides a steady force to maintain directional trim. It can operate independently
of the autopilot and may be used during normal hand-flight maneuvers. Yaw rate
commands are limited to 6 deg/sec by the yaw damper.
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