What is the stall speed with landing flaps extended?

The stall speed with landing flaps extended for the King Air 350 is indeed 90 KIAS. This stall speed is defined as the minimum speed at which the aircraft can maintain controlled flight with the landing gear down and landing flaps deployed. It is essential for pilots to know this speed as it aids in safe approach and landing maneuvers, ensuring that the aircraft remains above this speed during critical phases of flight, particularly during landing and go-around situations.

When landing flaps are extended, the aircraft achieves an increased lift capability due to the higher wing camber and increased surface area, which results in a lower stall speed compared to clean configuration flight. This reduction allows pilots to approach the runway at lower speeds, enhancing control and stability during landing. Knowing the stall speed with flaps extended is vital for maintaining safe operating margins and preventing inadvertent stalls while maneuvering at lower airspeeds.

In contrast, the other speed options do not correctly represent the established stall speed for the King Air 350 with landing flaps deployed, which could lead to unsafe flight practices if they were mistaken as correct values.