Quote from the BBC-:
But following the horrific Lion Air crash,
Boeing warned airlines of a potential fault in the new feature, which, under “unusual conditions, can push (the plane’s nose) down unexpectedly and so strongly that flight crews can’t pull it back up”.
This should have been enough to have the aircraft grounded immediately. Surprised to see the Chinese take the lead in grounding this model.
FAA, Boeing have a lot to answer for.