There has barely been any reporting on the incidents. One was with United and the other with Qatar Airways, both extremely similar where the planes started rapidly descending immediately after take off, coming within less than a 1000 ft of the ocean and then suddenly shooting up again.
To me it reads like some systemic failure which caused the falls and some automatic crash detection system that kicks in when the plane nears the ocean surface and automatically climbs up.
Fucking scary shit.
Qatar was spatial disorientation and there is no such automatic pull-up system. The warning system will activate and the plane will shout at you to pull up, which you probably should if you value your life. The autopilot will disconnect and you will have to hand fly it out of the dive. About the United incident we know literally nothing but it could be as simple as leaving the altitude set to zero. The plane will dive into the ocean if you tell it to. This is most likely a systemic training issue. Boeing being a criminally neglectful company and people fucking up are not mutually exclusive.
Hexbear users try not to come to preemptive conclusions challenge