Dynon Avionics SkyView Pilots Users Guide - Manual (Page 172)

Autopilot Operation
8-6 SkyView Pilot’s User Guide - Revision S
Figure 172 - Airspeed Low Indicator
When GPS ASSIST is annunciated on the PFD page SkyView does not have airspeed
information, likely due to a pitot failure or icing event. Therefore, when GPS ASSIST
is active, SkyView cannot limit operations to the maximum and minimum airspeeds
as described in this section. Use extreme caution when using the autopilot under
this circumstance.
Servo Errors
When a servo is offline (for example, when the Autopilot circuit breaker has been pulled) or has
failed, ROLL ERR and/or PTCH ERR are displayed in the Top Bar:
Figure 173 - Roll and Pitch Servo Failures
When Expert Autopilot is in use, press the MESSAGE button twice to view and acknowledge this
error. After the error is acknowledged, the Top Bar message is suppressed so that you can
continue to use the Flight Director for guidance.
Auto-Trim
SkyView has the ability to automatically trim the aircraft while the Autopilot is engaged. This
feature requires that you have an SV-AP-PANEL installed and are using its integrated trim
controller to actuate your pitch and/or roll trim servos. Reference the SkyView System
Installation Guide for more information about configuring Auto-Trim.
When Auto-Trim is enabled, you should not need to manually adjust the trim when the
autopilot is engaged. When the AP is running the trim, the Roll and/or Pitch Axes Engaged
Arrows will animate as described in the above sections. SkyView’s Auto-Trim feature is only
active on roll or pitch when that axis’ Autopilot servo is engaged. It does not actuate the trim
when you are hand-flying.
The Auto-Trim’s goal is to minimize the stick forces so that the Autopilot servos do not need to
apply much force to the control surface to maneuver the aircraft. This allows it to have the ideal
amount of control authority over the control surface, while keeping the aircraft in trim
continuously. Essentially, Auto-Trim flies the aircraft very similarly to how you do.
Although Auto-Trim is constantly monitoring and adjusting to neutralize trim forces, you may
occasionally see the Pitch and Roll Trim messages and advice as described in the above section.
However, given a short period of time, the Auto-Trim system’s movement should neutralize the
forces and the messages should subside. Note that Auto-Trim moves the trim surfaces slower
than your trim switch commands normally do.