What is the minimum spoiler speed above Vref for the CRJ 200?

The minimum spoiler speed above Vref for the CRJ 200 is Vref +17. This limitation is critical because it ensures that the aircraft has sufficient airspeed for the effective deployment of spoilers, which are used to increase drag and decrease lift. Deploying the spoilers at speeds lower than the required threshold could lead to undesirable aerodynamic effects, potentially compromising control and stability during critical phases of flight, such as approach and landing.

Understanding this limitation is vital for pilots to maintain safety and performance standards during operations. The choice of Vref +17 specifically accounts for the airspeed needed to safely operate the spoilers without adversely impacting flight control. Other options like Vref +10, +15, or +20 do not correspond with the established minimum spoiler speed and thus are not the correct values to ensure optimal safety and performance.