Goldenrivett
So if your are subjected to up and down drafts and turbulence, and your only working ADR is receiving erroneous info from a frozen pitot (due icing), and the stabiliser trim is still auto trimming, how does the Airbus now fly a safe trimmed AoA (speed)?
No problem .. fly level, and from the pitch attitude and config you can deduce whether your IAS is higher or lower than the recommended value, just like every other aircraft on the planet.