Which module receives brake requests in a Brake by Wire system?

• A. Brake Control Module (BCM)
• B. Electronic Control Unit
• C. Flight Management Computer
• D. Hydraulic Control Unit

Answer: (A)

In Brake by Wire, the pilot’s brake input is converted into an electronic command by a central brake processor. The Brake Control Module is the component that receives the brake requests—interpreting pedal position, wheel speed, weight on wheels, and other signals to determine how much braking is needed. It then generates a precise control signal to the hydraulic or electric actuators to apply the brakes accordingly. The other options aren’t the ones that directly receive the brake input: the Flight Management Computer handles flight planning, the Electronic Control Unit is a generic term for various subsystems, and the Hydraulic Control Unit is the executor that applies hydraulic pressure based on the BCM’s command, not the recipient of the raw brake request.