AF447
BOAC,
I think you are referring to the initial increase in pitch, at the start of the upset sequence?
Quote from the English version of the BEA "Update":
"The airplane’s pitch attitude increased progressively beyond 10 degrees and the plane started to climb. The PF made nose-down inputs and alternately left and right roll inputs."
The initial increase in pitch is not explained. At that stage, the BEA does not report any sidestick input.
The aircraft climbed from FL350 to FL375. At that stage, the BEA continues:
"At 2 h 10 min 51, the stall warning was triggered again. The thrust levers were positioned in the TO/GA detent and the PF maintained nose-up inputs. The recorded angle of attack, of around 6 degrees at the triggering of the stall warning, continued to increase. [...]
Around fifteen seconds later, [...]. The PF continued to make nose-up inputs. The airplane’s altitude reached its maximum of about 38,000 ft, its pitch attitude and angle of attack being 16 degrees."
Without wishing to put words into anyone else's mouth, I think the last two sentences may be what Checkboard was referring to.
Chris
Last edited by Chris Scott; 29th May 2011 at 21:43.