l think that the certification, approval and measuring of pilots should all be redone to insure safety.
you see, safety was lost, along with the passengers and crew...if everything met FAA requirements and safety was lost, then requirments must be changed.
I would start with the aircraft...full control throw may be used by the pilot at all speeds below and specifiy a speed. OTHERWISE a placcard must be installed to warn the pilot that full control throw may cause loss of the aircraft.