What is always given when authorizing use of a runway and a tailwind component exists?

• A. Preferred runway
• B. Noise-sensitive area
• C. Wind shear alert
• D. Wind direction and velocity

Answer: (D)

When a runway is authorized and there is a tailwind component, the information given must include the wind direction and velocity. Knowing where the wind is coming from and how strong it is lets pilots assess how the wind affects takeoff and landing performance. A tailwind can require a longer takeoff distance, reduce braking effectiveness, and influence the decision on which runway to use; the exact direction relative to the runway and the wind speed determine the tailwind component the aircraft will contend with. Other items like a preferred runway, wind-shear alerts, or nearby noise considerations aren’t universally provided with every runway clearance, whereas wind direction and velocity are the essential data needed to evaluate and manage the tailwind situation.