Section 9 Automatic Flight Control Systems (Optional); Afcs System Architecture - Garmin G3X Touch Pilot's Manual

SECTION 9 AUTOMATIC FLIGHT CONTROL
SYSTEMS (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: VOR, LOC, and GS modes are all GPS-aided. You must have a GPS
position and a valid navigation database to use VOR, LOC, or GS modes.

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 rolls commands are
displayed on the PFD 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. On G3X Touch installations that do not have a separate and independent
Flight Director, the Flight Director is always coupled to the autopilot.
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) auto-trim 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.
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AFCS
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