Originally Posted by
Realbabilu
So how to differentiate quickly whether it usual STS or insidious MCAS faster? Aoa display or MCAS activation alert,that may written in future AD.
Could Aoa display save the plane before airborne (in taxy) by detecting the differentiate two vane?
Aoa display is more like debugging. It will stress more pilot but it will helped understand the way Hal think.
AOA vane position is not valid until up to an airspeed well above that for taxi. Revised MCAS logic keeps MCAS from acting at all if an AOAs signals differ by anywhere near as much as appears to have been the case with the Lion Air accident data. I don't think the MCAS changes do anything for stick shaker so the shaker on the side with AOA failed high would activate as it did on Lion Air, but no MCAS.