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Old 6th Apr 2019, 20:34
  #3464 (permalink)  
bill fly
 
Join Date: Feb 2015
Location: The woods
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Originally Posted by Albino
Just to confirm, I'm talking about 'Control airplane pitch manually with control column and main electric trim as needed'

This is pretty basic stuff.
Also Memberberry and Derfed,

This illustrates my point that the stab runaway checklist is unsuitable for the false MCAS operation case. Point two in the stab runaway checklist presumed that AP was on and that AP trim was the trouble maker, if runaway stops after disconnecting, so now try thumb trim etc.
You can’t just pick bits out of a drill and say “I’ll use this point now”.
What is needed is a QRH checklist with memory items to cover the specific fault, including possible accompanying distracting indications.
As MCAS logic is in the process of being modified, a checklist which might have covered the two fatal cases may well not be suitable for the new mod.
What these men were faced with was a checklist for a different situation, nevertheless recommended by Boeing - no time to reflect on its merits and no ground study of any other suitable procedure.
We can all sit here and sort out measures at our leisure, which those pilots couldn’t.
A new and case specific drill needs to be made before further ops.
bill fly is offline