Does the anti-skid operate with alternate brakes when there is a BSCU failure?

Does the anti-skid operate with alternate brakes when there is a BSCU failure?

• A. Yes
• B. No
• C. Only when powered by emergency bus
• D. Not available

Answer: (B)

Anti-skid relies on the Brake System Control Unit to process wheel-speed data and modulate brake pressure to prevent wheel lock. If the BSCU fails, that control logic is unavailable, so the anti-skid system cannot function. Alternate braking provides a direct hydraulic path without the anti-skid coordination, meaning anti-skid protection is not available in that mode. In short, with a BSCU failure, anti-skid does not operate even when using alternate brakes.

Anti-skid relies on the Brake System Control Unit to process wheel-speed data and modulate brake pressure to prevent wheel lock. If the BSCU fails, that control logic is unavailable, so the anti-skid system cannot function. Alternate braking provides a direct hydraulic path without the anti-skid coordination, meaning anti-skid protection is not available in that mode. In short, with a BSCU failure, anti-skid does not operate even when using alternate brakes.