Dave Butler wrote:

Mark Hansen wrote:


All the airway segments (that's what we're talking about, right?) that I
know of have a defined point at each end of the segment. There is one
and only one great circle route between those two points. It's the same
great circle whether you follow it with a GPS or a VOR receiver.

The charted airway mag bearing is the issue. It was developed from one
source and Garmin, et al, may or may not use the same source.

But, you're right, it's no big deal, unless the airway has an
intersection course change of some magnitude.