Originally Posted by
iggy
I believe it is because the tendency of the airplane to roll.
The limitation to use speedbrakes with flaps extended might have something to do with an engine failure. If you lose a donkey with full flaps and the speedbrakes don't retract in time and you are close to the ground I don't know how much margin you would have left.
Good point. Good thing that the speed brake retracts automatically on the A319/320 in conf full and conf 3 and conf full on the A321.
Bonus question: Anyone knows why on A320 with AP ON we only have half speed brake?
Thank you.