Originally Posted by
314159
I don't think you're reading that correctly. The maximum out-of-trim condition that must be correctable with the elevator is that resulting from 3 seconds of trim operation. This is *way* beyond 3 seconds.
The stab wins, it always does. I don't know of any modern jet where the elevator can overcome the stab in worst case scenarios. This should be pretty well covered in groundschool...
If the elevator always won, we wouldn't need the cutout switches.
Not true...the B757 and B767 has adequate control authority such that the plane can be flown with the elevator inputs regardless of stab trim setting...including full nose up or nose down. It's not pretty and it's no fun, and it can take two pilots on the yoke as your arms get tired, but it can be done. I've done it in the simulator multiple times.
I was trained in both jammed stab full nose up and nose down-trimmed landings as well at my carrier.
I haven't flown a 737 since the -200 so I don't know anything about the MAX and its MCAS system.