John Ferguson wrote:
Can you get indicated airspeed from true airspeed and
add or subtract the vector or component wind.

No, you need temperature (which is also missing) and altitude to
calculate IAS from TAS.

I am presuming that the 302 is providing the data having
already been corrected for temp and alt.

The IAS and temperature data is available internal to the 302, but is
not reported by !w or any other usable sentence. The best one can do
(without additional input) is an approximation based on altitude, which
is not accurate enough for polar work.

Marc