PPRuNe Forums - View Single Post - AF 447 Thread no. 4
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Old 16th Jun 2011, 18:38
  #48 (permalink)  
bearfoil
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"The airplane began to roll to the right and the PF made a left nose-up input"

How much climb? Was he reacting to FD or VSI? BEA themselves say that the a/c didn't "start to climb" (Why do you assume it "started to climb" from level?)until the NU was passing through ten degrees NU. The pilot made one NU (one) input. Was he (attempting) correcting for a natural ND tendency (or, stopping a descent?) that the a/p had been solving, but at drop, the a/p input was stopped? (Yes?, since the a/p stops at quit; there are no more "trend" solutions). Since he then is described as inputting several ND inputs, was he attempting to control an opposite, and again, (perhaps) "natural tendency" for NU? Under what circumstances can the PF be overridden by Trim? He had attitude (supposedly) so what was the disagree between PF and THS? (If any). If at any time PF was aware of an NU of ten+ degrees, he tries to climb exactly Why? BEA have left the barn door open, and the ensuing nonsense on either side allows Airbus to relax at PAS?

It is just as easy for me to believe the THS went into banana mode as it is for PF (F/O1) to be thought to be wired backwards.


The airplane’s angle of attack increased progressively beyond 10 degrees and the plane started to climb. The PF made nose-down control inputs and alternately left and right roll inputs..
Trying to see where in the report the PF can be faulted for a THS at 13.2 degrees.

Last edited by bearfoil; 16th Jun 2011 at 18:53.