The Boeing 737 MAX had an additional safety feature that was causing crashes due to bad input from the sensors, that pilots didn't know about so they couldn't override. This was 2018 and 2019. After the first crash, the manuals and training were updated to explain what was going on and how to override it.

https://en.wikipedia.org/wiki/Maneuvering_Characteristics_Au...

Interesting, do you happen to have a case study?

Speaking of Airbus, They 'lost' 3-4 different aircraft (from 1988 to 2015) which crashed during development, or, spectacularly during their first airshow. Never slowed down their customers at ALL, and to this day, Boeing has never lost one new commercial airliner in those same circumstances. Yet, Boeing gets all the hate. smh