"Colin Kingsbury" wrote in message link.net...
From what I can tell a GNS-430 (even used) installed will cost around double
what a GNC-250xl or UPSAT setup would go for.

One thing to consider with UPSAT is how the AFM is written.

The UPSAT line reads "the user must verify that approach data is current"
The Garmins AFAIK read "the database must be current"
Pricy little distinction there.

The only thing I don't like about going this route is losing the second LOC.

The IFR GPS isn't a bad backup for the loc in practice. Slap "nrst"
and choose the LOM or intersection. Input the FAC. Make sure your CDI
is set to the most sensitive setting. It's not quite as sensitive as
the LOC becomes near DH but it's a good backup.

Cheers,
Sydney