boofhead:
Some of the charts show the GPS approach uses True Course. They do not show the equivalent Mag course. The US method shows both Mag and Grid. In the US the Garmin uses Mag and is seamless, but what happens when flying the approach in high latitudes in Canada? Do I see any difference? Will the Garmin switch to true course? How will I know?
Those procedures are stored in the nav database in true course.