What is the correct action during an "Uncommanded Roll"?

During an "Uncommanded Roll," the appropriate action is to counteract the roll with appropriate aileron input while simultaneously checking for stall indications. This response focuses on regaining control of the aircraft by applying corrective aileron input to level the wings and restore stability. It is crucial to monitor for signs of a stall, as an uncommanded roll could be indicative of an aerodynamic issue leading to stall conditions, necessitating prompt corrective measures.

Other options, like preparing for an emergency landing, do not address the immediate need to regain control of the aircraft. While it might be necessary to plan for an emergency landing later, the initial response must be to stabilize the aircraft. Engaging the autopilot at this moment is not viable; the autopilot may not effectively correct an unexpected roll and could complicate the situation further. Similarly, disconnecting all power is not practical and could lead to a loss of critical flight instruments and controls, further exacerbating the emergency. Hence, counteracting with aileron input is the most immediate and effective response during this emergency scenario.