Link..
https://leehamnews.com/2019/03/22/bj...-2/#more-29712
The article is not really relevant to the precise topic of this thread as it speculates on the possibility of elevator "blowback" being a factor in the crashes. HOWEVER, I thought the following exchange of comments on the article might be of interest, particularly the emboldened bit in the reply by poster Transworld. As someone who has nothing to do with the industry it was a fascinating piece of information, apologies if it's something professionals knew from day 1.
Knuffi
March 22, 2019 Does this mean that – when the FDR shows the left AoA sensor having 25deg and the right 5deg – the AoA vanes really where in this position? Or would you still consider a failure in how the data was processed by the flight computer yielding the difference?
ReplyTransWorld
March 22, 2019 Presently there is no way to tell.If the flopped to full up on less than takeoff speed, both should be flopped the same.How these work, what portions they go to when no significant airflow is all unknown to other than ATR pilots. Possible to even have a test command drifting around in the systemThe two comput3ers are programed by two different teams (its a method of ensuring no code is written duplicated to the computer that is identical so their is not a dual failure under the same circumstances) that said, it seems the two issue were both pilot side so there may be something in that coding on that side. Swap to the other side for control and it should go away but Lion it did not, so just more questions.
Alchad