Can you share a link?

I’m pretty sure no American airline had the same situation that the airlines with the crash had because they paid extra for the redundant AOA sensor.

The MCAS issue was a major issue, but the ultimate fundamental flaw was Boeing not including a redundant sensor (which is the one that was malfunctioning in the crashes) in the base package as they should have.

The inexplicably considered redundancy in this part an optional extra, and as far as I’m aware there were no US airlines that hadn’t taken the optional extra package.