GPSS Steering features use the ARINC 429 data stream provided by some GPS receivers and EFIS systems. When a WAAS enabled GPS receiver (such as the Garmin 400W or 500W series) is used, the autopilot will follow the roll commands to the extent that it will fly complete lateral flight plans, including procedure turns and RNAV GPS approaches. The GPSV function allows vertical tracking of RNAV LPV, LNAV/VNAV and LNAV +V descents into approved airports.
The GPSS LED illuminates when there is a valid ARINC 429 signal available and the autopilot is in the Track (TRK) mode. When the GPSS option is installed the Pro Pilot will always default to the GPSS mode when the data is present. In the event that the GPSS becomes inactive (i.e. on a localizer approach) the GPSS LED extinguishes and the Pro Pilot immediately begins to track the Aviation Data (AVLINK) or NMEA 0183 signal that it receives on a separate data input line.
Unit
EA
Hazardous
No
Oversize
No
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