There are other ways of estimating the AoA. If you know the airspeed and the load factor, you can back out AoA to a reasonable accuracy. That's less precise tha

There are other ways of estimating the AoA. If you know the airspeed and the load factor, you can back out AoA to a reasonable accuracy. That's less precise than a dedicated sensor, but it should be good enough to tell which sensor is the good one if they diverge.