"Ron Rosenfeld" wrote in message
news
On 16 Feb 2005 17:02:23 -0800, wrote:

this does not look like great news for WAAS or LAAS. where is WAAS
actually functioning right now? (is there a map of applicable areas?)
or is it "so much for the heavily advertised WAAS features of the
GNS480"?

WAAS usually covers most of CONUS, southern CANADA, northern Mexico and
Caribbean islands with accuracy sufficient to provide LPV approaches.

See http://www.nstb.tc.faa.gov/vpl.html for a map that is updated every
six
minutes.


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

What is the 'vertical protection level' on the map? Is this the altitude (in
meters!) that waas is guaranteed? If so, it looks like over 120 meters
coverage is everywhere. This can't be, can it? What am I missing?

Harvey