"Tarver Engineering" wrote in message
...

The CNX-80 is about the limit of the technology; without adding an air
data
computer and perhaps a radar altimeter.

I plan a Garmin 430 which is much more economical than the CNX-80 but will
still be able to fly the precision WAAS approaches when the unit is upgraded
later this year. An air data computer and/or radar altimeter would not add
any more capability to fly an instrument approach and will not be required
for WAAS GPS approaches.

--
Richard Kaplan, CFII

www.flyimc.com