Having learned that one can bypass the World Map and file an IFR flight plan with the various WT Garmin units, I was playing around with the GNS 530 in the Cessna Skymaster.
Where does one set their desired cruise altitude with these, such that ATC doesn’t assign a max ceiling cruise altitude?
I tried entering a cruise altitude value on the GNS’ VNAV page, but that didn’t stop ATC from assigning me 14000’.
Is there a way this can be done with the various Garmin units?