AFCS
If the GPSS data is invalid (for example, if there is not an active GPS leg) or the
selected HSI source on the G3X Touch is not GPS, the annunciated "GPSS" text will
turn yellow and a zero turn command will be sent to the autopilot.
334
Garmin G3X Touch
Yellow
'GPSS'
Text
GPSS Invalid (PFD)
™
Pilot's Guide for Certified Aircraft
190-02472-00 Rev. D