Use caution when braking at speeds above what KIAS?

Using caution when braking at speeds above 80 KIAS is crucial in the T-6A because braking effectiveness can be significantly impacted at higher speeds. At these speeds, the aerodynamic forces acting on the aircraft change the dynamics of control and stability. If heavy braking is applied, it may lead to an increased risk of tire or brake failure, and the potential for loss of control during deceleration is heightened.

The T-6A is designed for optimal handling characteristics below this threshold, allowing pilots to maintain better control while braking effectively. Once the aircraft exceeds 80 KIAS, the risk associated with braking maneuvers becomes more pronounced, and caution is advised to prevent any mishaps during deceleration.

In practice, this knowledge helps pilots make informed decisions about their braking techniques, ensuring safety while managing speed effectively during ground operations.