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Old 15th Dec 2017, 04:34
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Speedwinner
 
Join Date: Dec 2008
Location: Birmingham
Age: 39
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A321 speedbrake and flaps 2

Hi guys,

Could someone explain me the following fact?

When flying with flaps 2 and putting the speedbrake out in a A321 you always get a roll moment. To the left and then to the right. Short term and then it’s gone. You don’t have that on the 320 or 319. What is the technical reason?

Thanks!
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