[salawat]

Yes they did break rules. They misclassified it's failure as hazardous instead of catastrophic, and deliberately implemented a SPOF architecture that had to get refactored to include both sensors. Then they misrepresented it as requiring no additional training.

There was a lot done against regulations at a minimum, and damn well don in bad faith with respect to the public.

[glitchc]

What's the proof that they broke any rules? Is the FAA charging them with a regulatory failure? None, and no. The NY Times has a nice expose on the matter [1].

Quote from TFA: Boeing did not submit a formal review of MCAS after the overhaul. It wasn't required by F.A.A. rules.

[1] https://www.nytimes.com/2019/07/27/business/boeing-737-max-f...