A220 AFCS 4/2026 ACTUAL UPDATED QUESTIONS AND CORRECT ANSWERS
What are PFCCs and what do they do? (Primary Flight Control Computers)-Responsible for the operation of the Fly-By-
Wire
System and its associated functions. The PFCCs receive commands from the flight
deck
controls through the IIMs, or from the autopilot/flight director systems. They issue
appropriate commands to move the flight control surfaces and provide flight
envelope and
structural protection of the aircraft.
How many total PFCCs are there 3
How many PFCCs are active at any given time 1
How many PFCCs are required to have the aircraft a. 1
operate in Normal Mode b. The PFCC in control is auto selected at power up
c. There is no way to determine which PFCC is in use during normal mode
AT and FD functionality are provided by which computers DMCs - Data Concentrator Unit (DCU) Module Cabinets
What are PFCCs and what do they do? (Primary Flight Control Computers)-Responsible for the operation of the Fly-By-
Wire
System and its associated functions. The PFCCs receive commands from the flight
deck
controls through the IIMs, or from the autopilot/flight director systems. They issue
appropriate commands to move the flight control surfaces and provide flight
envelope and
structural protection of the aircraft.
How many total PFCCs are there 3
How many PFCCs are active at any given time 1
How many PFCCs are required to have the aircraft a. 1
operate in Normal Mode b. The PFCC in control is auto selected at power up
c. There is no way to determine which PFCC is in use during normal mode
AT and FD functionality are provided by which computers DMCs - Data Concentrator Unit (DCU) Module Cabinets
