Am trying to figurewhat heading is displayed on the 720. I realize it's a "GPS heading" (ie it shows track made good, as they used to say) but I read somewhere that a GPS can be (mathmatically) made to be referenced to magnetic north. On approach to Rwy 28 today my IFly was showing a "heading" of almost exactly 280 degrees.
My question I guess is: on the IFly compass rose, what is that referenced to? True north or magnetic north?
Regards, Dave Harvey.