On Wed, 24 Sep 2003 13:54:37 GMT, "Richard" wrote:


The GNS 430 is the most versatile panel-mounted product GARMIN has produced
to date. It combines GPS navigation, VHF communication, and moving map
graphics on a big color display. This "all in one box" 12-channel unit
offers IFR GPS, ILS, VOR, LOC and glideslope capability in a single,
space-saving package


The GNS430 box with an external CDI is legal as the sole means of
navigation. Even if the GPS fails you still have a VOR which is legal
as the sole means of navigation. As for backup a single GNS430 is no
worse than a single VOR which is also legal for IFR navigation.