What does the flight management system (FMS) use to display data to the pilot?

The flight management system (FMS) is designed to support pilots by integrating and processing various types of flight and navigation data. It takes into account a wide array of inputs, including GPS information, waypoints, airways, and other critical navigation aids, and combines these into a coherent output that is displayed to the pilot.

By utilizing raw flight and navigation data, the FMS can present essential information regarding the aircraft's current position, flight path, altitude, and other parameters. This comprehensive dataset allows the pilot to make informed decisions and ensures a safer and more efficient flight.

In contrast, focusing solely on weather patterns, VOR navigation data, or maintenance data would severely limit the functionality of the FMS. Weather patterns might help in assessing conditions, VOR data is just one aspect of navigation, and maintenance data is more relevant for ground operations rather than for real-time flight navigation. Thus, the ability of the FMS to utilize and display a comprehensive range of raw flight and navigation data is essential for effective aircraft operation.