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Old 24th May 2004, 10:46
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Herp
 
Join Date: Oct 2000
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Right Way Up..

Not relevant I'm afraid. The Boeing 757 Flight Crew Training Manual says 'Use of sppedbrakes does not appreciably affect airplane roll response' with no caveat for partial deployment.

I haven't heard of any 'all or nothing' recommendation and have experienced no ill effects from partial deployment, which is my preferred method of use as it is more comfortable for all on board (assuming I've thought far enough ahead!).
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