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Thread: B-737 HDG SEL for trimming
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Old 10th Aug 2018, 23:05
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Chesty Morgan
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Join Date: Mar 2002
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The main reason to trim in HDG is because LNAV follows a track and, therefore, the heading will change with wind changes. You can’t then be sure that the reaction of the control column is due to you trimming or wind change.

In HDG this won’t happen.
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