I believe one of the findings of this investigation was that the
autopilot should have been equipped with an audible alarm that the
autopilot was being disengaged and that pilots should be made aware of
two features of the aircraft, the first being the nature of how the
autopilot functions (most pilots were not trained about the feature of
the yoke disengaging the autopilot, as well as the following one),
secondly, that had the pilots not touched the flight controls the
aircraft is designed to automatically return to level flight after
entering a stall/spin.