On Tue, 06 Mar 2007 17:54:42 -0800, Sam Spade wrote:

Ron Rosenfeld wrote:

On 6 Mar 2007 12:04:19 -0800, "Jon" wrote:


I believe you may still shoot the approach if the receiver indicates
it's available. The NOTAM
simply prevents you from flight planning on it.


I will not (cannot) get into the nuances of the NOTAMS. I am not
familiar with with 480 but I am with the 500W/530W. If the LPV
annunication is green, you are absolutely solid to fly the approach. If
the aunnication is yellow early on, it may still switch to green in time
to fly the approach. If it is green prior to the FAF it is golden.

The problem *is* the nuances of the NOTAMS. For other approaches, OTS
generally means you can't use the approach. That may be why they chose to
use UNREL for WAAS notams.

The 480 also annunciates the approach that the signal quality (and
approach) will allow. It is in green letters on the various pages.

LNAV
LNAV/VNAV for either that level or an LNAV approach with advisory vertical
guidance
LPV

In addition, if the signal is not good enough to support vertical guidance,
the GP indicator will flag.
If the signal is not good enough for an LNAV approach, the CDI will flag.


Ron (EPM) (N5843Q, Mooney M20E) (CP, ASEL, ASES, IA)