Originally Posted by
mikewil
Does ADSB not provide IAS?
Only suggesting it might because FlightRadar24 has a field for IAS but I'm too poor to afford gold membership and see it unlocked!
I think it depends on the equipment in the particular aircraft.
For aircraft fitted with a 'steam driven' i.e. purely mechanical ASI, there's no source of digitised ASI data. More 'modern' ASIs and EFIS systems? Yes.