26. (Refer to Figure 36.) With a reported wind of north at 20 knots, which runway (6, 29, or 32) is acceptable for use for an airplane with a 13-knot maximum crosswind component?

Use the following steps:

1. Locate the 20-knot wind velocity arc on FAA Figure 36.
2. Draw a line upward from the 13-knot crosswind component (maximum crosswind).
3. Note that in this case, acceptable crosswind components will result anytime the relative wind angle is equal to or less than about 40° (the intersection of the 13-knot vertical line and the 20-knot wind arc).
4. Calculate the relative wind angle between the north wind (0°) and the runway headings:

RWY Relative Angle Landing
6 60° Upwind
29 70° Upwind
32 40° Upwind

Only runway 32 provides a crosswind component that would be in acceptable limits for the airplane specified.