What is the maximum tailwind component allowed?

• A. 5 knots
• B. 10 knots
• C. 15 knots
• D. 20 knots

Answer: (B)

A tailwind component directly affects takeoff and landing performance. When wind blows from behind, there’s less wind over the wings during liftoff, which reduces lift and increases the takeoff run, and it also makes landing touchdown faster relative to the runway, increasing stopping distance. To keep performance within what the airplane’s data and braking systems were tested for, a common operating limit is a tailwind component of ten knots. Staying at or below this value ensures that required runway length and braking performance remain within safe, certified margins. While some aircraft or manuals may allow more in certain cases, ten knots is the standard maximum in typical training and operation scenarios.