[SystemSafety] "FAA chief '100% confident' of 737 MAX safety as flights to resume"

Peter Bishop pgb at adelard.com
Tue Dec 1 10:28:32 CET 2020

I am no expert in such matters, but a response characteristic where
the same pilot input results in an increasing plane response seems to be an
example of positive feedback which could lead to pilot induced
oscillation (PIO).

So the plane might be stable if the pilot does nothing (PBLs point?),
but the *system* of (plane+pilot) might be unstable (Olwen's point?).


On 30/11/2020 20:34, Peter Bernard Ladkin wrote:
> On 2020-11-30 20:36 , Kinalzyk, Dietmar AVL/DE wrote:
>> MCAS was introduced to correct the nose up tendency of Boing 737 Max
>> after lifting up the bigger engines (avoid hazard to stall). 
> That is not what Boeing says.
> Prof. Peter Bernard Ladkin, Bielefeld, Germany
> ClaireTheWhiteRabbit RIP
> Tel+msg +49 (0)521 880 7319  www.rvs-bi.de
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Peter Bishop
Chief Scientist
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