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Old 30th April 2019, 12:17 PM
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Philip Argy Philip Argy is offline
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Join Date: May 2008
Location: North Strathfield
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Exclamation Primitive inputs need more redundancy and resilience

However sophisticated the avionics, the old adage of garbage in garbage out applies. Primitive physical sources like pitot tubes and AofA sensors need redundancy and resilience before they are taken as trusted sources for sophisticated avionics. Taking a single sensor as a trusted source was objectively poor risk management in the implementation of MCAS.

There have been too many examples of erroneous data from pitot tubes and AofA sensors causing adverse avionics responses. This needs much more focus going forward IMHO.

Blaming pilots is hardly helpful - human error needs to be anticipated in system design. It's no use if the cure is worse than the complaint. Pilots know what to do when the stick shakes. MCAS is not necessarily the best solution to the MAX propensity to stall!

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