This link will take you to an interesting re-visiting of the Egypt Air 990 crash many years ago.

https://www.youtube.com/watch?v=WIzTB_oCVlo&feature=youtu.be

Over the past decades there have been many re-visits of NTSB findings which show how money and influence tend to blame the pilot.  But after further investigations are done, it shows other reasons for the event. 

For example, Boeing had troubles with rudder actuators for many years which caused numerous crashes, but they never admitted these problems. 

Actuator problems affected the 737, 727 & 747.  Without admitting any problems, the rudder actuators were quietly replaced after the deadly crash of a USAir 737 over Pittsburgh, PA.  Now of course we see the problem they are having with the 737 MAX.