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 paired with wheel speed sensors
• D. Not available

Answer: (B)

The anti-skid system relies on the Brake System Control Unit (BSCU) to process wheel speed information and modulate braking torque to prevent wheel lock. If the BSCU fails, the anti-skid logic can no longer function. In that situation, the aircraft can use an alternate braking mode, which provides basic braking without anti-skid protection. Because anti-skid logic is not available in this alternate mode, anti-skid does not operate when using alternate brakes. This keeps some braking capability available even with the BSCU failure, but you lose wheel-slip protection, so you must brake with extra care.

The anti-skid system relies on the Brake System Control Unit (BSCU) to process wheel speed information and modulate braking torque to prevent wheel lock. If the BSCU fails, the anti-skid logic can no longer function. In that situation, the aircraft can use an alternate braking mode, which provides basic braking without anti-skid protection. Because anti-skid logic is not available in this alternate mode, anti-skid does not operate when using alternate brakes. This keeps some braking capability available even with the BSCU failure, but you lose wheel-slip protection, so you must brake with extra care.