If I remember AF447 correctly it was all speculation as there was no data until over a year later when the recorders were recovered. At that time, if my memory serves me right, data showed the flight crew member in the right seat was commanding pitch up with his joystick while the pilot in the left seat was either neutral or pitch down. Basic flaw of joysticks on 2 crew cockpits in that they do not provide input by feel between flight crew. Thales sensors were speculation due to failure history.
I keep looking here to see if there is data confirming why Ethiopian crashed similar to the data on Lion Air. Have I missed it? In the case of the Lion Air there was the history of the previous flight where the pilot experienced the same sensor malfunction yet flew to destination. Ethoiopian says the previous flight was normal with no write-ups. It reminds me so much of the AA DC-10 in Chicago where the action was to shoot first and ask questions later with the evidence of what happened lying on the runway. Yes, the DC-10 had many faults resulting from rushing into production but engines falling off wings was not one of them. Engines falling off wings causing the slats to retract was a design flaw.
Now the media is interviewing MAX pilots who say they have spent their time as MAX pilots terrified of their life due to control problems. How come they did not say this before? And we have Donald Trump saying airplanes today are too complex for pilots to fly. It just keeps getting worse and worse.