PPRuNe Forums - View Single Post - MAX’s Return Delayed by FAA Reevaluation of 737 Safety Procedures
Old 25th Jun 2019, 23:08
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Fly Aiprt
 
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Originally Posted by yoko1


The original problem occurred when MCAS activated when it wasn’t needed.

Another question comes to mind.
What would have happened in a real terrain avoidance maneuver with the stickshaker active ? Wouldn't it have run for 9-10 seconds, adding 2.5 units of nose down trim ? And so overwhelming the elevator authority ?
What's the pilot to do in that case ? Counter trim, with a risk of negating the MCAS raison-d'etre ?
Flip the trim cutout switches on the pedestal ?

If you have to counter/cut off the MCAS at the very moment it is supposed to be useful, why not have the freedom to counter it just by pulling on the yoke ?

Last edited by Fly Aiprt; 25th Jun 2019 at 23:09. Reason: Typo
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