What is the recommended flap setting if crosswinds exceed 20 knots?

The recommended flap setting of no flaps when crosswinds exceed 20 knots is based on the need to maintain optimal control of the aircraft during takeoff. When operating in strong crosswinds, using flaps can increase the risk of the aircraft being pushed off its intended track due to a higher wing loading and a larger surface area exposed to the wind.

By selecting no flaps, pilots reduce the effects of aerodynamic forces that could exacerbate control issues during the critical phases of flight. A clean wing configuration enhances performance and responsiveness to control inputs. Moreover, it allows for better management of aileron effectiveness and directional control, which is vital in crosswind conditions, especially during ground maneuvering and initial climb.

Other options, such as takeoff flaps or half flaps, tend to change the lift characteristics of the aircraft in a way that may lead to increased sensitivity to crosswinds, thus making it more challenging to control the aircraft safely during takeoff. Therefore, opting for no flaps is the recommended practice in such conditions to ensure increased stability and safety.