Groundspeed Jet Knot 
Air Facts
JULY 15, 2024
Though wind is reported using such simple numbers like 270@15G20, I’ve come to believe that 20 knots here is not always the same as 20 knots there. I did a checkride in 30 knot winds in the flatlands of Kansas, almost straight down the runway. Then came the landing in 20 knots in the Hill Country of Texas, west of Austin.
iPad Pilot News
JUNE 14, 2024
For example, a pilot of a light twin aircraft, flying at a medium altitude with a tailwind could easily have a groundspeed in excess of 200 knots.
Flying Magazine
APRIL 25, 2024
As we turned to intercept the localizer, the winds were 360 at 53 knots at 2,000 feet, according to our wind vector on the primary flight display. Our groundspeed was a meager 72 knots as we descended on the glideslope. The wind was 52 knots at 2,500 feet and decreased to nearly calm at 6,500 feet.
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