Blackbird From , joined Dec 1969, posts, RR:
Reply 4, posted (13 years 9 months 6 days 19 hours ago) and read 1764 times:
On the 737, like many aircraft, have flight spoilers that can be used to assist roll-control by deploying asymetrically. Asymetrical deflection helps kill-off lift on that wing, thus lowering it at a more rapid rate than the ailerons could alone. On the 737, once the yoke is turned past 7 degrees the flight spoilers begin to raise asymetrically (the spoilers are not up on the other side).