PPRuNe Forums - View Single Post - AF 447 report out
View Single Post
Old 6th August 2012 | 22:48
  #609 (permalink)  
RetiredF4
15 Anniversary
 
Joined: Jun 2009
Posts: 801
Likes: 74
From: Germany
Clandestino .. i was just pointing that just based on outcomes, control architecture can not be considered to be causal in AF447 catastrophe as there were a) other cases of FBW Airbi that did not stall after UAS b) conventionally equipped aeroplanes that did suffer from stubborn pull into stall.
And i was just pointing, that it does not prove the opposite either. I´ts no argument what so ever.

Clandestino
I suppose you meant PNF. Why should be there control loop for him? He is not supposed to be controlling the aeroplane, but monitoring her - aeroplane, not the other pilot.
Thanks for the headsup, will insert the missing "N" into the original post.

It´s your oppinion, that the PNF does not need the closed control loop to monitor and if necessary take corrective action?

Tell BEA, they seem to think otherwise.
BEA FR 2.1.2.3 Control of the flight path
It would also seem unlikely that the PNF could have determined the PF’s flight path stabilisation targets. It is worth noting that the inputs applied to a sidestick by one pilot cannot be observed easily by the other one and that the conditions of a night flight in IMC make it more difficult to monitor aeroplane attitudes (pitch attitude in particular).
Clandestino
I disagree with their idea that the absence of natural horizon makes it more difficult to monitor and maintain pitch in an airliner.
My expierience tells me the same. If we remove that point from the BEA statement, then remains

BEA FR 2.1.2.3 Control of the flight path
It would also seem unlikely that the PNF could have determined the PF’s flight path stabilisation targets. It is worth noting that the inputs applied to a sidestick by one pilot cannot be observed easily by the other one
I think, BEA was downplaying the above statement by adding the second part of the statement. But that´s just a guess over which i would not grind a ax with you.

Clanedstino
You've succeeded.
Although that post and similar others were not directed to me, i comment on them. They are very personal and disrespectful to the adressed poster, do not contribute to the thread and are not necessary at all. If you are annoyed over some posts, then disregarding them would be a better option.
The exchange of arguments should have some style and repect, and i start missing them in your posts. Posts might be wrong, inapropriate or out of the world, but to answer them with personal attacks is lowest level of discussion.

Last edited by RetiredF4; 6th August 2012 at 22:55.
RetiredF4 is offline