Originally Posted by
Denti
As far as i know they only see the actual IAS, not the set one. Might be a difference between Mode S Enhanced Surveillance (Europe) and ADS-B (elsewhere) though.
Correct, IAS is part of the EHS spec (and there's provision for it in the ADS-B spec as well, though I've never seen it used in a squitter).
Selected Speed isn't in the EHS or ADS-B specs.