I don't believe that is right. I think when they refer to "sole means
of navigation" they mean that you need to have other means of
navigation (separate NAV receiver). Think about it from a safety
point of view, forgat the legal requirements for a moment. If you
were in the soup and your Garmin died, what would you do? I would
never trust one instrument. The all-in-one feature of advanced GPS
units is nice, but you could lose the whole thing.

-Dave
PP-ASEL-IA