Marc Ramsey wrote:
Andy wrote:
2. Wind calculation - not done in 302

The 302 does calculate wind, and it is used by the 303 and several third
party software packages. I've found it to be fairly accurate, but I'd
be a bit skeptical about what it's reporting after long periods of cruise...

Ok I suppose I should have said - not displayed by 302. In my setup
the wind is displayed by GNII on a PDA . Those winds estimates seem
reasonable but I don't know if GNII uses the wind data directly from
the 302 or computes its own wind estimate. According to the interace
spec the 302 sends the following wind info:

1 Vector wind direction in degrees
2 Vector wind speed in 10ths of meters per second
3 Vector wind age in seconds
4 Component wind in 10ths of Meters per second + 500 (500 = 0, 495 =
0.5 m/s
tailwind)

So it advises user systems how stale the wind estimate is. GNII does
not pass that info on to the pilot. Does the 303?

Andy