58y wrote:
The GPSMAP 76S has the barometric sensor, at least OLC thinks so,
according to the online flight display.

Or is it the straight 76 that you bought?

Jack

I've noticed that some flight evaluation programs will take the GPS
Altitude and display it as Pressure Altitude if none exists in the
B-Record positions normally reserved for Barometric Altitude. That
may be what you are seeing...

P3