Which limitation applies to flap use regarding speed?

When discussing flap use and its associated speed limitations, it's essential to understand that each aircraft type has specific operational guidelines that ensure safe flight. The correct choice indicates that flaps may be utilized up to a limit of 10 degrees while flying under 110 KIAS (Knots Indicated Airspeed).

This limitation is critical for maintaining aerodynamic efficiency and control. At higher speeds, deploying flaps can lead to increased drag and potentially destabilizing the aircraft. The 10-degree limit allows for controlled lift augmentation while minimizing the risk of adverse aerodynamic effects that can arise from exceeding that speed threshold.

Other options mention different degrees of flap deployment and higher speeds, which may exceed operational safety margins set by the aircraft manufacturer or FAA regulations. It's important for pilots to adhere to these limitations to ensure safe flight operations under various phases of flight, particularly during critical maneuvers like approach and landing. Understanding these parameters helps pilots maintain the integrity of flight performance and safety.