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Old 22nd Nov 2008, 10:12
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KristianNorway
 
Join Date: Jul 2006
Location: Norway
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Crs selectors, B737-800

Hello

Could anyone tell me how the crs selectors are coupled to the autopilot on the 738?

Remembering flying an ILS with the old HSI in flightschool it didn't matter which direction one pointed the CDI, it deflected right if you were to the right on the localizer anyway.

Staying on the localizer with the 738 and then turning the crs-selector 10 degrees seems to make the airplane want to point its nose in that direction, but then goes back to the inbound course to the localizer anyway.
It seems there are two systems fighting each other.

I haven't found out how the crs-selectors are coupled.
Any explanations would be of great interest

Thanks in advance!
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