Which statement best describes the roll disconnect function on lateral control?

• A. Separates the lateral control, freeing the unjammed aileron while SSCU maintains lateral control through the multi-function spoilers on the jammed side
• B. Separates the control wheels
• C. Zero effect on lateral control
• D. Engages the rudder only

Answer: (A)

When a roll control surface jams, the system uses a roll disconnect to keep the airplane controllable by freeing the healthy surface. It decouples the jammed side so the unjammed aileron can do the work of producing roll, while the SSCU takes over lateral control by using the multi-function spoilers on the jammed side to supplement or maintain roll authority. This setup prevents the jammed surface from fighting the good one and preserves maneuverability.

The other ideas don’t fit because the roll disconnect isn’t about simply separating the control wheels, and it does have a real effect on control. It also isn’t limited to rudder action; it’s about reclaiming roll control using the remaining surfaces and spoilers when one side is jammed.