PPRuNe Forums - View Single Post - Indonesian aircraft missing off Jakarta
View Single Post
Old 7th Dec 2018, 17:48
  #2046 (permalink)  
FCeng84
 
Join Date: Feb 2009
Location: Seattle
Posts: 379
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by Turbine70
I think it's a fair distinction to raise but feel this presentation is disengenous.

As far as we can tell, MCAS is intended to provide a more consistent and predictable handling response in incipient stall conditions.

How does an intermittent and unadvertised control input, of complex algorithmic intensity, every 5 seconds, provide that?
'

Turbine70 - the "intermittent and unadvertised control input" that the JT610 crew experienced was a result of the AOA sensor failure combined with MCAS. I agree with your questioning how that could provide "consistent and predictable handling response in incipient stall conditions." It would not. With a properly functioning AOA sensor, MCAS will only take action when AOA is high, approaching stall and thus provide a tendency for the airplane to lower its nose and thus aiding with recovery from the high AOA condition.
FCeng84 is offline