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Old 13th Jun 2011, 09:11
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cmcjma
 
Join Date: Apr 2008
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Why 30 seconds on Rudder trim technique?

Boeing recommend 2 technique for trimming the rudder on the 737-NG.
Both recommend: ensure the autopilot is engaged in HDG SEL and stabilized for at least 30 seconds.
Why is these 30 seconds for?
Thank you in advance.
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