PPRuNe Forums - View Single Post - AF 447 Thread No. 8
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Old 13th June 2012 | 23:07
  #1260 (permalink)  
Clandestino
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Joined: Feb 2005
: ATPL
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From: Correr es mi destino por no llevar papel
Originally Posted by Lyman
What am I missing here?
The point.

Aeroplane did not pitch up out of her own accord but because CM2 commanded her to. It stalled because CM2 kept on pulling when she was alredy above her practical ceiling. Aeroplane performed as expected. Pilots not at all.

Originally Posted by Lyman
The game was lost before crew had a chance to troubleshoot.
If the name of the game is "situational awareness", then you are right.

Originally Posted by OK 465
when speeds returned to normal at the apex at 5.6 degrees of pitch
Errrr... not quite. The apex of first pull-up was 12°, zoom climb made vertical speed go up to 7000 fpm (at FL362!), both recorded airspeeds (ADR 1 & ISIS) were false. Nose pitched down slowly, following the order form the right sidestick, IAS 1 returned to normal while pitch was 11°. ISIS speed started showing the correct value just about the time the aeroplane exited envelope following the second pull-up. Pitch was about 16° and alpha about ten.

Originally Posted by OK 465
So when the FD's returned, there was no visual indication of VSW, i.e. no real good visual indication of stall proximity or the inadvisability of pulling up again at this point.
For the time being, this seems to be the correct assessment. However, altitude display was available so why would anyone consider a good idea to pull, especially as MAX REC was discussed just a couple of minutes before and the aeroplane was very near it, or to pull while something is shouting "STALL STALL STALL" in the cockpit is something I find inexplicable in rational terms.

Originally Posted by OK 465
And without the classic aircraft response
Response was completely according to the tired old cliche: To go up, pull back on the stick, to go down, pull back further.
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