Quote:
Originally Posted by Red
And where does it say that MCAS doesnt work on auto pilot? All indications point to going to manual mode to override it so it seems logical that it only works in auto. Unless I'm missing something here.
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See, that is incorrect. But lots of inaccurate reports, so I understand it.
MCAS occurs with the flaps up while in manual flight. The ‘complicated series of steps’ to disable the system is turning off 2 switches sitting side by side, which prevents the trim from operating. So if the autopilot is on, the MCAS doesn’t (or at least shouldn’t) be operative, it is already off when the MCAS is behaving incorrectly. Turning off the stab trim cutout switches will disengage the autopilot if it wasn’t already off.
And I’m not disagreeing with the decision to ground the airplane, just there is a bunch of inaccurate noise around it now. And mentioning a bunch of other minor malfunctions that have nothing to do with this issue is inaccurate.