: You must have the base AviTab plugin installed in your X-Plane/Resources/plugins folder for the aircraft's ISCS to detect and display it.
: Go to the General Settings or A/C Config tab within the ISCS. please enable avitab in iscs
popup window (often located in the "Plugins" menu or via a dedicated cockpit click-spot). Navigate to Settings : Go to the General Settings tab within the iSCS menu. Activate AviTab : Look for the : You must have the base AviTab plugin