Dan Winterland:
But that's in plan mode - and it's not an ND.
Oh, but it
is the ND in what Garmin calls the "North Up" mode. There are three other orientation options, Track Up, DTK Up, and HDG Up. Following is Track Up at long range scale; note the great circles still show:
I think you're stuck on the Boeing page. I was using Boeing's idea of a ND in 1984 on the early 767. A lot has changed since then, but not necessarily with birds Boeing certified eons ago.
