When is anti-skid available upon landing?

Anti-skid systems are designed to prevent wheel lock-up during braking, which is crucial for maintaining control and reducing the stopping distance on takeoff and landing. The system activates when certain speed thresholds are met to ensure optimal performance.

The correct answer indicates that anti-skid becomes available when either of the aircraft's wheels spins up to 37 knots after landing. This is significant because the system needs to detect sufficient wheel speed to function properly. If the wheels are not spinning fast enough, the anti-skid system will remain inactive, preventing it from intervening during braking.

In terms of operational safety and efficiency, this particular speed threshold allows the anti-skid system to engage effectively, providing pilots with the necessary braking assistance in critical landing scenarios. Thus, the function of the system is central to enhancing the control and safety of the aircraft during the landing phase, making sure the brakes engage properly when needed, while still allowing for the possibility of some manual control and oversight from the pilots. The response of the anti-skid system is essential for the safe operation of landing and the subsequent rollout of the aircraft.