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Old 8th Apr 2016, 12:18
  #1134 (permalink)  
PJ2
 
Join Date: Mar 2003
Location: BC
Age: 76
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Frosch, re:
When flying the MAP manually with a relativly light B737, one easily might apply to much ND Trim in attempting to capture a low level-off altitude.
The reason that too much trim can easily be applied is because leveling-off using the horizontal stabilizer is most certainly not the way to fly any aircraft. The horizontal stabilizer is a very powerful flight control, to be used carefully and appropriately in manual flight. "Trimming-into" a level off, while not unheard of, is not the way to level off. I am well aware that it can be and has been done on the Boeing and perhaps understand why some crews may decide to operate the aircraft this way. However, the autopilot isn't going to anticipate a level off and begin trimming prior to capture.

The challenge of a low-altitude level-off on a go-around is and always has been a challenge because things are happening very fast. You have to be right on top of the airplane's performance, no matter what type you're flying; there's no magic in it - it's just part of the kit. Trimming "into" the level off is a recipe for loss of control.

PBY, others have provided some examples which may or may not be comparable to what happened here. Are you thinking of the Sochi (Armavia) or the Perpignan (XL Airways/Air New Zealand) accident? If so, here are links to the Perpignan report and the Sochi Report.
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