Afcs Operation - Garmin G5 User Manual

Pilot's Guide

2.9.5 AFCS OPERATION

NOTE: When the G5 is configured as part of a G3X/G3X Touch system, the
G5 can be used to drive the autopilot and flight director only when all GDUs
are removed from the network.
AFCS functionality is distributed across the following Line Replaceable Units (LRUs):
• GMC 305/307 AFCS Mode
Control Unit
The AFCS system can be divided into these main operating functions:
• Flight Director (FD) — Flight director commands are displayed on the display
The flight director provides:
– Command Bars showing pitch/roll guidance
– Vertical/lateral mode selection and processing
– Autopilot communication
• Autopilot (AP) — Autopilot operation occurs within the pitch and roll servos.
It also provides servo monitoring and automatic flight control in response to flight
director steering commands, Air Data and Attitude and Heading Reference System
(ADAHRS) attitude, rate information, and airspeed.
• Yaw Damper (YD) — The yaw servo (optional), is self-monitoring and provides
Dutch roll damping and turn coordination in response to yaw rate, roll angle, lateral
acceleration, and airspeed. If installed the YD comes on when the autopilot is engaged
and stays on after disengaging the autopilot. The YD can be turned on/off independent
of the autopilot using the YD Key.
• Manual Electric Trim (MET) — Manual electric trim may provide trim capability
for any properly configured axis (pitch, roll, or yaw) when the autopilot is not engaged.
NOTE: Refer to the G5 Installation Manual Section for information on install-
ing and configuring the G5 Integrated Autopilot Interface.
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Garmin G5 User's Manual
• GSA 28 AFCS Pitch/Roll/Yaw
Damper (optional) servos.
190-02072-00 Rev. B