Originally Posted by CONF iture
Under normal law, when the AoA becomes greater than alpha prot, the system switches the elevator control from normal mode to a protection mode in which the AoA is proportional to the sidestick deflection.
Alpha prot would also have stopped autotrim. Unfortunately alphaprot was never activated because the 'polled' AoA's were frozen.
BEA suggests that the erroneous limit speeds should have alerted the crew, although actually they may have misled them into believing there still was some margin to go towards stalling. See Dutch report on Turkish crash at AMS re reading the speed tape numerically.
regards
HN39