"Mike Adams" wrote in message
...
Doug Vetter wrote:

And to think...the 480 has apparently been downgraded to a TSO 129 box...

Not true. The 480 is still approved for WAAS procedures - the SAIB just
recommends a RAIM check and
a non-GPS alternate.

Note also that the press release includes a footnote saying the 430W is
not approved for primary means
navigation. Just connecting the dots, it appears that the testing of the
430W revealed a marginal test
condition that was also applicable to the 480, and that resulted in both
the 480 SAIB, and the need for
another software upgrade to the 430W to get the TSO limitation lifted and
provide primary means WAAS
capability.

My guess is they took the TSO limitation to get the TSO completed, and
allow the hardware retrofit to get
started.

Hardware retrofit?

*Due to the TSO limitation in conjunction with the AFMS limitation,
Garmin's
GNS 400/500 series navigators will not be certified as a "primary means" of
GPS navigation until after customers install a new *SOFTWARE* version.
Garmin expects to issue a Service Bulletin in the first quarter of 2007
issuing the software. The software will be updated via the 400/500W data
loader card.
This required software update is expected to be available in the first
quarter of 2007.

Al G