What is the headwind component for landing on Runway 18 if the wind is reported at 220° at 30 knots?

To determine the headwind component for landing on Runway 18 when the wind is reported from 220° at 30 knots, it's essential to understand the relationship between the wind direction and the runway heading. Runway 18 has a heading of 180°, which means it is oriented towards the south.

The wind is coming from 220°, which is southwest of the south. To find the headwind component, you need to calculate the angle between the wind direction and the runway heading and then determine how much of the wind contributes to a headwind.

First, calculate the angle difference between the wind direction (220°) and the runway heading (180°):

220° - 180° = 40°

Now you have a 40° angle that is not directly in line with the runway. To find the headwind component, you can use the cosine of this angle. The headwind component can be found using the formula:

Headwind Component = Wind Speed × cos(angle)

So, substituting in the values:

Headwind Component = 30 knots × cos(40°)

Calculating cos(40°), which is approximately 0.766:

Headwind Component = 30 × 0.766 = approximately 23