What is the purpose of a flight control computer (FCC)?

The purpose of a flight control computer (FCC) is to process flight control inputs and manage flight control surfaces. This critical component of an aircraft's avionics system ensures that the aircraft responds accurately to the pilot's commands and maintains stability during flight. The FCC interprets various inputs from the pilot, such as control column movements and pedal inputs, along with data from sensors measuring the aircraft's attitude, speed, and altitude.

Once this information is processed, the FCC sends commands to the flight control actuators or surfaces, such as ailerons, elevators, and rudders, to ensure the aircraft behaves as intended. This process allows for not only traditional manual control but also automatic features like autopilot and flight envelope protections, which enhance safety and ease of operation, especially in complex flight conditions.

In contrast, options related to fuel calculations, navigation assistance, or cabin pressure management pertain to different systems within the aircraft and do not directly involve the role of the flight control computer. Each of those systems has its dedicated functions and components tailored to support different aspects of flight operations.