Slip angle is the key
A 29 degree slip angle reduced effective wing surface area thus fatally compromising climb performance. This resulted from the 15 degree left rudder trim which simulator testing showed rendered the aircraft uncontrollable above 140 knots, thus making it impossible for the pilot to correct the slip or the aircraft's heading. That's it in a nutshell. We may never know why the full left rudder trim was not detected but it is most likely because the pilot did not bother with checklists and thought he could do everything from memory.
There's a broader question of why the B200 design allows for a rudder trim limit which renders the aircraft uncontrollable at normal speeds. I'd have thought at least some warning signal should be generated if take off power is selected with that rudder trim set.
All other factors appear to be insignificant compared to the extreme rudder trim setting.
I'm not sure why others think the analysis is deficient. You need to read the whole report carefully.
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Philip
Last edited by Philip Argy; 4th October 2018 at 08:08 PM.
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