Garmin G3X Pilot's Manual page 333

DISENGAGING THE AUTOPILOT
The Autopilot is manually disengaged by pushing the disconnect button on the
autopilot unit, or by pressing the autopilot disconnect button on the control stick or
yoke or by pressing the AP Key on the GMC 305. Manual disengagement is indicated
by a five-second flashing yellow 'AP' annunciation and an aural alert. Cancel the aural
alert by pressing and releasing the AP/CWS Button again (GSA 28 autopilot only)
Automatic disengagement is indicated by a flashing red 'AP' annunciation and an
aural alert. The flashing indication continues until acknowledged by pressing the ENT
Key. Automatic disengagement occurs due to:
• System failure
• Invalid sensor data
• Inability to compute default autopilot modes
D
iSengaging the autopilot when a MalFunCtion iS SuSpeCteD
If an autopilot failure or trim failure is suspected to have occurred, perform the
following steps:
1)
Firmly grasp the control wheel.
2) Press and hold the AP DISC Switch. The autopilot will disconnect and power
is removed from the trim motor. Power is also removed from all primary
servo motors and engaged solenoids. Note the visual and aural alerting
indicating autopilot disconnect.
3) Retrim the aircraft as needed. Substantial trim adjustment may be needed.
4) Pull the appropriate circuit breaker(s) to electrically isolate the servo and
solenoid components.
5) Release the AP DISC Switch.
o
verpowering
In the context of this discussion, "overpowering" refers to any pressure or force
applied to the pitch controls when the autopilot is engaged. A small amount of
pressure or force on the pitch controls can cause the autopilot automatic trim to run to
an out-of-trim condition. Therefore, any application of pressure or force to the controls
should be avoided when the autopilot is engaged.
190-01115-00 Rev. K
a S
utopilot ervoS
Garmin G3X Pilot's Guide
AFCS
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