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Old 8th Apr 2019, 07:54
  #3586 (permalink)  
CurtainTwitcher
 
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Originally Posted by CodyBlade
When they went thru checklist Auto throttle 'deselect' not done.

Power left at 94% until end.

In cold light of day Lawyers will have a field day with this.
Well, if we want to get really picky, did they complete the "Approach to Stall or Stall Recovery" Non-Normal Manoeuvre (NNM) first, because that the second line says"
"Immediately do the following at the first indication of stall (buffet or stick shaker).
The third item is (step 2 disconnect autothrottle):
"smoothly apply node down elevator to reduce the angle of attack until until buffet or stick shaker stops".

Glad they skipped that NNM and went onto something else. I wonder what the lawyers will make of that decision?

In the cold hard light of day, 3 crews were placed in situations beyond the engineering assumptions of all the SOP's, NNC and NNM's. They faced a continuous cacophony of noise (stick shaker), that has been shown by anecdotal reports in this thread to induce tunnel vision and difficulty doing ANY task, including just flying the aircraft. Two crew were unable to cope, the third had assistance from an additional pilot.

Perhaps as the lawyers are debating and dissecting second by second details, they should do it with the continuous Stick Shaker loop in the background. It really is an asymmetric situation for the crews, if they don't do something (following the NNM for the stick shake and shove the nose down) and save the day at that point they get no credit, yet they don't do something else everyone wants to point to them and say see, pilot error. For the manufacturer it is a business decision to hang the crew if possible as it reduces their liability. They get to cherry pick the inevitable forced pilot errors in such difficult circumstances and gloss over the manufacturers errors and omissions. Nothing personal, just business to make the most bucks it can.

I've pretty much argued consistently in the Lion Air thread and this one, that the crews were put into incredibly difficult circumstances by the rational design choices of the manufacturer. Those design choices were made under circumstances of far less pressure than the crews faced. The only possible justification Boeing could make is was more profitable for them to design the system this way.
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