What controls the ailerons, elevators, and rudder on a 737-800?

The ailerons, elevators, and rudder on a 737-800 are controlled through mechanical linkages that connect to hydraulic power control units. This system operates effectively to manage the various control surfaces of the aircraft, allowing pilots to maneuver the plane safely and efficiently during flight.

The mechanical linkages ensure direct and responsive control, while the hydraulic power amplifies the force applied by the pilots, making it easier to operate the flight control surfaces. This combination of mechanical and hydraulic systems provides a robust and reliable means of controlling the aircraft, especially in various flight conditions.

The other options do not accurately reflect how these control systems operate on a 737-800. Electronics only may play a role in some modern aircraft systems, but the primary control mechanism relies on physical linkages and hydraulic assistance. A Wi-Fi connection to ground control would not be a viable or safe method for controlling flight surfaces. Lastly, while pilots do use levers and controls within the cockpit, they are not purely analog and instead function through the hydraulic systems linked to the mechanical controls.