Garmin aera 660 Pilot’s Guide 190-02017-20 Rev. A38NavigationOverviewNavigationFlight PlanningHazard AvoidanceAdditional FeaturesAppendicesIndexCOMPASS ARCA compass arc appears by default on the Navigation Map. The magenta bugindicator (similar to the bug indicator on the HSI) can be set by touching TRK on the3D Vision Page.Compass Arc (Navigation Map)Compass ArcMagenta Bug IndicatorDisplaying/Removing the Compass Arc on the Navigation Map:1) From the Main Menu, touch Map > Menu > Set Up Map2) Touch the dedicated page icon, and touch General.3) Touch On or Off to display or remove the Compass Arc.