If an emergency situation requires a downwind landing, pilots should expect a faster

• A. Groundspeed at touchdown
• B. Upslope ground speed
• C. Slower ground speed
• D. No change in ground speed

Answer: (A)

Ground speed is the combination of your airspeed and the wind component along your flight path. When you land with a tailwind (downwind), the wind pushes you forward relative to the ground, so the speed you have over the ground at the moment of touchdown is faster than your airplane’s indicated airspeed. The airspeed indicator still reads the same value you’ve planned for, but you end up with a greater ground speed and typically a longer rollout because the tailwind adds to your forward motion after touchdown. This is why a downwind landing requires planning for more runway and distance to slow down, even though your approach airspeed remains unchanged. A headwind would do the opposite and reduce ground speed, while no change would occur only if there were no wind or if wind were exactly crosswise to your path.