Originally Posted by
CZAMFlyer
To your point about MCAS being "locked out", I'm not a Boeing expert, but I don't think this is a feature that can be disabled at will.
I though there was only certain conditions where it was active though, one of those being that the flaps were retracted. I read somewhere ( possibly this thread, can't remember) that there was a ferry flight from Iceland to Europe done below FL190 and with the flaps extended one notch to ensure the MCAS would not engage.