Wind shear from a meteorological tower was studied to see how it affects aircraft approaching for landing. By using wind data and simulating an approaching aircraft, it was found that just looking at average wind shear values is not enough for autopilots. The study showed that large deviations in aircraft path during approach were more likely in stable weather conditions with low winds from the east or south. However, severe storms did not cause dangerous wind shear situations. Overall, the wind profiles from 1973 at Cabauw did not cause aircraft to deviate beyond the normal glide path indicator range.