Mike Adams wrote:
Sam Spade wrote:


Subject line says it all.

If so, what was your impression?


I've flown several of them, but only in practice. The one at KPRC overlays the ILS, but the one at KDVT
(RNAV 25L) gives nice capability to this airport, although the weather hardly ever requires it. It's also a
nice approach for practice, with a 9 mile final approach segment, it gives you lots of time on the needles.
The 480 flies them very nicely. It may be just me, but it seems the deviations are more stable than an
ILS, i.e. no beam bending, side lobes, etc.

Mike
The needles are super stable, much better than most ILSes. They do get
more sensitive as you approach the runway, just like ILS. That had to
be built into the box, because GPS is a linear system. It was necessary
to do that to get the flight technical error to ILS-like values
close-in. It's really a very good system, except for the availability
problems at some locations. ILS doesn't have that problem. ;-)