Final answer:
The purpose of the FMS control panel is to provide aircrew with control over the aircraft's flight management system, including inputting flight plans, controlling the autopilot, and monitoring navigation and fuel data.
Step-by-step explanation:
The FMS control panel serves the purpose of providing aircrew with control over various aspects of the aircraft's flight management system. This includes functions like inputting flight plans, setting waypoints, controlling the autopilot, and monitoring navigation and fuel data. For example, aircrew can enter the desired destination coordinates or flight plan into the FMS control panel, which then guides the aircraft along the designated route.