Given that an autopilot is only as good as the information it is receiving, how much training and simulator time does one get to practice identifying the effects of abnormal transducer outputs, and the procedures to follow if these are detected?
How much commonality is there between the transducers used by the autopilot and those for the multifunction displays?
If you were flying in manual mode, or a mixed mode which did not require a particular transducer, would you have any way of knowing its readings were erroneous before switching to a flight mode which was dependent upon it?