Flight spoilers assist the ailerons in rolling the aircraft.
Flight spoilers deploy as the control wheel is displaced past 11 degrees to reach a maximum deflection when past 70 degrees.
They also deploy but symetrically when used via the speed brake lever,at the flight detent,the flight spoilers are at their full deflection of 20 deg and 22.5 deg for the inboard and outboard respectively.
So if in turn with the wheel displacement increasing past the 11 degrees and the spoilers in flight detent,the roll will not be increased as the spoilers would already be in their full deployed via the speed brake.
In any position other than flight detent,an increase in bank( wheel displacement more than 11 deg) will end up with more up spoilers on one side than the other.
If the lever is increased fast and especially with flaps ,overbanking may occurr and or AP disconnect.
Last edited by de facto; 27th Dec 2012 at 13:06.