Airbus: the tale of fault tolerant control

Flight Control Computers (FCC) take the pilot orders transmitted to the actuators by an arrangement of mechanical components to provide enhanced maneuvering characteristics. The control surfaces follow the FCC commands through electrical connections.

It implies that, the aircraft reliability is also dependent on the FCC performance. The FCC architecture is divided into a command channel and a monitoring channel:

1. The command channel provides the required computations for enhanced maneuverability and stability.