Which statement best describes the relationship between FPV and FCU during normal flight?

• A. FPV provides a graphical indication of actual flight path; FCU commands and autopilot/FD guidance work to align aircraft with the desired path.
• B. FCU automatically selects route while FPV displays only traffic data.
• C. FPV controls thrust while FCU handles altitude.
• D. FPV is used only for weather data.

Answer: (A)

The main idea is that the Flight Path Vector shows the actual trajectory the airplane is tracing through the air, while the Flight Control Unit provides the commanded trajectory and the autopilot/flight directors work to bring the aircraft onto that path. In normal flight, the FCU sets the target path through speed, heading, altitude and vertical mode, and the autopilot/FD translate those commands into control surface and thrust changes to steer the airplane so the actual path follows the desired path. The FPV will reflect any small deviations caused by wind or gusts, and the automation will continuously correct to keep you on track. FPV isn’t about weather data or traffic alone, and it doesn’t itself control thrust or select the route—that’s handled by the FCU in conjunction with the FMS/navigation guidance.