Mandatory Garmin STC Service Bulletin – GFC500
Garmin Service Bulletin on all GFC500 Autopilots On the 21st November 2021, Garmin Aviation issued a **MANDATORY** Service Bulletin for all GFC500 Equipped aircraft with Pitch Trim Installed. The reason for this was that an uncommanded automatic pitch trim runaway may occur when the autopilot is first engaged. Engagement of the autopilot with this condition…
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