How does wind affect takeoff and landing performance, and which wind component has the greatest impact on ground roll?

• A. Headwind increases ground roll
• B. Tailwind reduces takeoff distance
• C. Headwind reduces ground roll and takeoff distance
• D. Crosswind has the greatest impact on ground roll

Answer: (C)

Wind blowing toward the runway (a headwind) makes a big positive difference for both takeoff and landing. It increases the airspeed of the wing for a given ground speed, so you reach the liftoff speed sooner along the runway. That means less runway is needed to take off, i.e., a shorter takeoff distance. On landing, the headwind lowers the groundspeed at touchdown, so you roll along the runway more slowly and stop sooner, reducing the ground roll distance.

Tailwinds do the opposite, lengthening the distance needed on takeoff and increasing the landing rollout. Crosswinds mainly affect how you stay on the centerline and control the aircraft rather than directly shortening the runway distance.

So the statement that headwind reduces ground roll and takeoff distance best describes how wind components impact performance.