Hello,
Just started using the GTN 750 and have a quick question. During flight w/ VNAV enabled I get some message about it not being supported for this leg of the flight. What does this mean? I did some research on it and found a few threads here about it but it looks like at some point it was changed from VCALC to VNAV. Is it possible to get VNAV working (really only would like ToD calculation) or can I revert back to VCALC?