GNS 430W vs GNS 480

Roy N5804F wrote:



I have a real problem with your statement that the 430/530 is not enroute
certified. They are all that is fitted into the bird I fly we fly IFR all
the time.


It is so certified. This really gets complicated, because the FAA has
created a moving target with all their changes.

You can use your 530 as sole means by doing an en route RAIM prediction
for the route.

Once the 530W has the update, you can use it as sole means without
taking any action for domestic flight.

The latest version of the 530 without WAAS, is approved for sole means
for oceanic because of FDE (fault detection exclusion).

The FAA has never really taken a firm position on what is primary for en
route, because the NAS is still predicated on VOR. This is very much an
FAA problem of being a horse and buggy aviation agency. ;-)