The autothrottle automatically pulling the throttle back sounds so much like MCAS preventing nose being pulled up and in both cases, it seems the pilots did not know previously these kind of activations could happen.

Aviation herald article of the crash http://avherald.com/h?article=41595ec3/0070&opt=0

100 crash analyses by the same author:

https://www.reddit.com/r/AdmiralCloudberg/comments/by4s2x/pl...

"A radio altimeter measures a plane’s height above terrain by bouncing a radio signal off of the ground and recording the response time."

If that's the case, how come a negative reading was not assumed as a malfunction? Am I missing something, or can a plane ever be in negative altitude with respect to whatever this radio signal is bouncing off from?

edit: s/never/ever/

Medium links should be banned as long as they have that popup.