Dave, now that makes sense. You are talking about the UAT Flight
Information System (FIS). That indeed may be free of charge; however
it is very limited (2 pages in the MX20 manual). WSI is selling (i.e.
you have to subscribe to) their own WSI InFlight FSI (8 pages) which
has many more functions. Garmin's own GDL69/69A FIS is supposed to
have many, many more functions - but buyer bewa on many it says in
the manual "when enabled" or "this product is not available at this
time" - don't hold your breath.

Gerd