PPRuNe Forums - View Single Post - Boeing 737 Max Software Fixes Due to Lion Air Crash Delayed
Old 6th May 2019, 15:08
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Ian W
 
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Originally Posted by Willoz269
Wow.....if anyone was lucky enough to watch 60 Minutes Australia last night, about the MAX and how it was certified....I wonder how Boeing management sleep at night.
Among the damning parts were the AA pilot showing what the "training package" they received was....made no mention of MCAS and how it could override pilot input.
Also, clarification of why MCAS is solely reliant on a single AOA sensor.....if Boeing had put redundancy, then they would have been required to do simulator testing before certification....just to clarify here...the people who were interviewed were all in the USA, and representatives of pilot and engineering groups
It probably didn't mention how MCAS could override pilot input because MCAS could not override pilot input. It is the other way around any trim input by the flight crew would (and did) override MCAS. That is how the penultimate Lion Air flight continued to a safe landing and how the first 6 minutes or so of the Lion Air crash flight proceeded. It was only when the PM on that flight took over and ceased to trim back to unloaded just 'blipped' the trim to stop MCAS that nose down trim increased to uncontrollable levels.

Is trimming not a standard practice anymore?
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