Considering PF is "inserted in the loop" when A/P (and A/THR) drops why PF of AF447 told about "crazy speeds"?
Mac, If you will recall, the statement about crazy speeds was likely not the result of the instrument displays, but from the noise of the turbulent flow around the aircraft (due to extremely high AOA). Actual airspeed indications were largely Invalid due to the extremely high AOA, or extremely low-for the same reason.