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Old 15th December 2017 | 07:38
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applecrumble
 
Joined: Mar 2017
Posts: 177
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From: London
As the speedbrakes extend it causes a very slight difference in airflow over each wing which induces the rolling motion that you speak of. It can also occur on the A320.
This is why speedbrakes and FLAP 2 is not reccomended by Airbus.
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