THS deflection
To debunk the earlier post regarding the automatics causing max trim the AF447 trim was caused by excessive and prolonged stick back pilot input for a few minutes. It was not HAL taking control. On the contrary the protections were degraded which allowed him to make more mistakes due to his lack of training and bad decisions.
To use a car analogy it is like turning the steering wheel to full lock and then blaming the power steering for making the car skid. Without the driver input the assist would not be in use at all.