Which feature enhances landing performance in the Pilatus PC-12 NG?

Flaps play a crucial role in enhancing landing performance for the Pilatus PC-12 NG. When extended, flaps increase the camber of the wing, allowing the aircraft to generate more lift at lower speeds. This is particularly beneficial during the landing phase, as it enables the aircraft to fly at a slower approach speed while maintaining control and preventing stalling. The increased lift provided by the extended flaps, combined with a reduction in stall speed, allows for shorter landing distances and improved stability during approach.

While speed brakes, winglets, and leading-edge slats contribute to an aircraft’s overall performance and efficiency, they do not directly affect landing performance in the same way flaps do. Speed brakes primarily help to reduce airspeed and descent rate, winglets improve aerodynamic efficiency and fuel economy, and leading-edge slats enhance stall characteristics at higher angles of attack. Hence, flaps are specifically designed to enhance landing performance, making them the correct choice in this context.