What is the maximum flap operating speed at Flaps 15?

The maximum flap operating speed at Flaps 15 is 165 knots. This speed, denoted as Vfe (Velocity Flaps Extended), represents the maximum permissible airspeed at which the flaps can be safely deployed. Maintaining airspeed below this limit ensures that the aircraft remains aerodynamically stable and that the flap systems function correctly without risk of structural damage or adverse aerodynamic effects.

In the case of the Pilatus PC-12 NG, each flap setting has its own associated maximum operating speed, and pilots must be aware of these limitations to ensure safe and effective operation of the aircraft during various phases of flight, particularly during approach and landing when flaps are typically deployed. Understanding these limits is crucial for managing the aircraft's performance and ensuring compliance with operational safety standards.