"John Bell" wrote in message . com...
From: "Richard Hertz"


I have yet to try this myself, but two pilots I know suggested I try it.
The airways are defined by VOR radials. GPSs do not seem to navigate them
correctly. In fact, one of the pilots mentioned flew with an
"instructor"
who was relying on a GPS for lateral guidance on an IFR flight plan. The
pilot told the instructor to knock it off and use the vors as he was
seeing
CDI needle deflection. The instructor said not to worry.

After some time ATC informed them that they were off the airway (though
the
gps showed dead-on).

You should be able to navigate an airway more accurately using a GPS than
you can with a VOR.

I think so too. I never had any trouble following airways with my
Skymap IIIc. I recently spoke with some C-5 pilots who claim they can
tell who is flying on GPS by looking at how close they are to the
center of the airway. The GPS takes all the work out of trying to find
your wind correction angle on the airway. Just put the white line on
the pink line (in the case of my Skymap).

-Robert