Comment by interestica
1 day ago
That’s absolutely applicable here. It means that an engine cutoff shouldn’t be allowed at all during certain parts of flight. It’s not crazy to think that a design fix would be to prevent those engagements during certain parts of takeoff (a certain window). It’s fly by wire anyway so it could presumably be done programmatically.
MCAS was basically made to prevent user input that would send the plane into a dangerous angle. The computer overrode the inputs. So there’s precedent for something like it.
Do you mean the MCAS System that sent two planeloads of people to their deaths?
That MCAS system?
> The computer overrode the inputs.
This is incorrect. The manual stabilizer trim thumb switches override MCAS.
Are we not in agreement? MCAS overrode the inputs and the thumb switches could override MCAS?
The pilot's inputs are the thumb switches, and they override MCAS.
Additionally, the stab trim cutoff switch overrode both MCAS and the thumb switches.
Using both easily and successfully averts MCAS crashes, as proven in the first incident (there were three, but only two are reported on).
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MCAS autonomously adjusts trim downward. The trim switches override MCAS, but when released, MCAS can resume trimming down again. The trim adjustments don't "override" the pilot's elevator inputs (MCAS has no direct control over the elevators), but they can make the controls so heavy that it's impossible to pull up.
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