Mode S capability
Having just acquired the use of mode S at Manchester Centre, I wonder if someone could explain why some A/c with "enhanced" mode S don't display all of the downloadable parameters automatically. Is this a function of the selection on the transponder on the flight deck?
This doesn't appear to be a factor of which fleet the a/c is from - I had two BA A320's on frequency the other day - one displaying all the parameters, the other only showing IAS and GS, no hdg or SFL (selected flight level).