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Old 6th October 2018, 05:26 PM
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Philip Argy Philip Argy is offline
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Join Date: May 2008
Location: North Strathfield
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Question ZCR

Not clear what maximum speed was reached - take off was at 111 kts and positive rate of climb was maintained until the full left rudder trim created a slip angle that led to a loss of lift being generated as well as an inhibited ability to change heading. Whether control was impossible or just very difficult probably doesn't matter - it seems clear enough that the condition could not be corrected unless the pilot realised what was wrong, and he plainly did not. Why he did not appears from the report to be because three pre-takeoff opportunities to check the rudder trim setting were missed or did not lead to detection of the adverse setting.

I don't know why that left rudder trim could not be overcome with sufficient right rudder but the simulator apparently showed that it could not be.
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