"Richard Kaplan" wrote in message
s.com...
"Tarver Engineering" wrote in message
...

I would not credit WAAS with much of it. The 5 sample GPS engine and
the
pressure altitude data are much more important to the VNAV. Getting
from
7.2 meters to 3.6 meters longitudinal accuracy does not give a lot of
extra

Look, a Gulfstream G-IV with autoland would be nicer (and safer) too but
that is not in the cards for most pilots, me included.

From a practical perspective, the bottom line is that right now there is
no
avionics setup economically practical today for a single-engine piston
airplane which can fly an RNAV LNAV/VNAV approach or a WAAS GPS LPV
approach. However, toward the end of the year the Garmin CNX-80 and
Garmin
400/500 series will be capable of flying these approaches.

Correct?

Agreed.