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Old 28th May 2011, 03:08
  #258 (permalink)  
VH-UFO
 
Join Date: Feb 2003
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Per BEA initial report - in structured form for clarity.

01:35:15 Radio:TO ATLANTICO - @ INTOL
01:35:46 Radio:FROM ATLANTICO - Maintain FL350...eta TASIL?
01:55:xx Captain awakens #2 co-pilot
01:59:32-02:01:46 Turbulence & WX Briefing
02:06:04 PF notifies CC turbulence ahead
02:08:07 PNF "Go left a little"


11 Seconds elapsed:
=================================================
02:10:05
AP then AT disconnects.
PF I have the controls"
A/C rolls to right.
PF inputs left and nose-up
Stall warning 2X
A/S "sharp fall" from 275 > 60kts Captain's PFD
Same indications on ISIS "few moments later"
=================================================


34 Seconds elapsed:
=================================================
02:10:16
PNF "...we've lost the speeds" "...alternate law"
A/C attitude goes beyond 10 pitch up
A/C V/S indicates positive rate of climb
PF nose down inputs. L/R inputs.
V/S goes from 7000 fpm to 700 fpm
Roll angle recorded between 12 deg R and 10 deg L
Captain's A/S rises sharply to 215kts
ALT 37,500.
AOA 4 degrees
=================================================


02:10:50 PNF calls Captain to cockpit


49 Seconds elapsed:
=================================================
2:10:51
Stall warning
TOGA
AOA 6 degrees
PF "maintained" pitch up commands
Everything up to the point highlighted in red makes sense in relation to pilot inputs vs aircraft situation, even with loss of airspeed indicators. At 2:10:16 aircraft indicates positive rate of climb and angle of attack, pilot corrects by nose down input.

Stall warning sounds at 2:10:51, TOGA applied with AOA at 6 degrees, but PF MAINTAINS PITCH UP COMMANDS, and it pretty much all turns to ****e from this moment on.

Why would you maintain a pitch up command?
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