PPRuNe Forums - View Single Post - AF 447 Thread no. 4
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Old 17th Jun 2011, 00:18
  #87 (permalink)  
bearfoil
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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. The trimmable horizontal stabilizer (THS) passed from 3 to 13 degrees nose-up in about 1 minute and remained in the latter position until the end of the flight.
BEA. The first two statements, by BEA, describe a recovery from APPROACH TO STALL.

The next Statement describes a good picture of the THS after its position at a/p loss plus PF's additive, created the climb. If PF was unaware of THS postion at handover, he is figuring, hmmm. three degrees. His attempted recovery from APPROACH TO STALL, instead of being from three degrees, was from SIX, which he appears to have held.

If he had captured TOGA, (such as it was), the absence of the STALLWARNING means he is a success. Unfortunately, the TRIM is helping him maintain back pressure up to thirteen degrees.

SO. Two recoveries from APPROACH TO STALL. Holding back pressure all the way. With the eager help of THS.

Last edited by bearfoil; 17th Jun 2011 at 00:32.