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737 NG rudder use

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737 NG rudder use

Old 22nd Dec 2010, 15:29
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737 NG rudder use

Flight manual for NG states not to use rudder, except for crosswinds, engine failure, and trim. So does yaw damper automatically apply required rudder for coordination?
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Old 22nd Dec 2010, 16:53
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'Co-ordination' is not needed for the rates of roll used and spoilers also provide.
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Old 23rd Dec 2010, 01:29
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flybubba:

Flight manual for NG states not to use rudder, except for crosswinds, engine failure, and trim. So does yaw damper automatically apply required rudder for coordination?
Those were the implicit instructions for jet transports from the 707 and DC-8 days.

But, it seems it took the AAL Airbus crash at JFK in Nov, 2001, to bring it to the fore.
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Old 25th Dec 2010, 11:19
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The 737 Autopilot has no rudder channel, so no rudder is being used for co-ordination

If no coordination is needed i don't know. I do know that the spoilers operate during turning. In the end, the turn IS coordinated.
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Old 25th Dec 2010, 12:20
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In fact the autoflight system for the 737 NG does have a rudder channel. If it is used however depends on the options ordered, it is a must for fail operational ones. It operates only during approach and go-around though and is therefore no use to any coordination effort.
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