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Old 30th Apr 2019, 12:09
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RTO
 
Join Date: Feb 2011
Location: Scandinavia
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Originally Posted by Bend alot
How is flight in pitch up when MCAS is inactive - but required for certification?

Have you trained for that? - is it a light or rapid change? - or just it wants to go vertical in an instant?

I guess you can not answer as you have never been there - but why change from the reported 0.6 degrees to a required 2.5 degrees?

That to me as an engineer, is the transition is/will not be slow when the cowls start to create lift. (MCAS runs the high speed trim)
My understanding is that to trigger the pre-mod MCAS without an inop AOA sensor on the FCC in use, one would have to produce an upset and depart well beyond the normal operating envelope. That would be pretty bad in any transport category airplane. However with a faulty sensor (pre-mod) the appropriate procedures should not cause a loss of the airplane.
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