During roll disconnect, what does the SSCU do to maintain lateral control?

• A. Maintains lateral control through the multi-function spoilers on the jammed side
• B. Disengages all roll control
• C. Shifts control to the rudder only
• D. Initiates automatic roll damping

Answer: (A)

When roll disconnect happens, the SSCU preserves lateral control by using the jammed side’s multi-function spoilers. With the aileron on that side jammed and unable to provide a normal roll input, the system commands the spoilers on the same wing to deploy. This changes the lift and drag on that wing, creating a rolling moment that compensates for the stuck control surface and keeps the airplane controllable about the roll axis. The rudder isn’t used to manage roll in this situation, and the system doesn’t simply disengage all roll control or rely on automatic roll damping—the purpose here is to reestablish roll authority by utilizing the spoilers on the jammed side.