VAL Avionics NAV 2000 User's Guide Page 161

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Autopilot Operation
SkyView Pilot’s User Guide - Revision Q 8-3
Other Autopilot Status Information
In addition to the modes that are engaged and armed, the Top Bar and the area around it can
communicate other important Autopilot status information.
Roll Slip Indicator
You may see this during periods of turbulence or if the strength of the servo is not sufficient to
actuate the control surface. If slipping occurs on the roll servo, SkyView displays a slip warning
as illustrated in the following figure. Reference the SkyView System Installation Guide for more
information regarding servo slippage.
Figure 148 - Roll Slip Indicator
Pitch Trim Indicator
When the autopilot is flying the aircraft in the pitch axis, a Pitch Trim Indicator can appear. This
indicator alerts you when the pitch servo detects excessive load on the elevator which would
result in a large pitch excursion when the autopilot is disengaged. To eliminate the excessive
trim forces that the autopilot is trying to overcome, trim the nose of the aircraft in the direction
indicated: up or down. Adjust the trim in small increments and wait a few seconds between
adjustments to see whether the adjustment is sufficient to remove the out-of-trim indication.
Figure 149 - Trim Nose Up Indicator
Pitch Slip Indicator
You may see this during periods of turbulence or if the strength of the servo is not sufficient to
actuate the control surface.
If slipping occurs on the pitch servo, SkyView displays a slip warning as illustrated:
Figure 150 - Pitch Slip Indicator
Reference the SkyView System Installation Guide for more information regarding servo
slippage.
Pitch Slip/Trim Indicator
If prolonged periods of pitch slipping are detected, the condition may be relieved with pitch
trim. SkyView displays a slip indication combined with a trim request.
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