Wind Component Calculation
- The Surface Wind is defined as the wind velocity and direction at a height of 50 feet.
- The Surface Wind is reported by the Control Tower.
- The direction reported by the Control Tower is a magnetic direction as the runway direction is also magnetic.
- A METAR or a TAF wind information is a true direction.
- When using the pathfinder navigation computer a runway direction is entered as a number between 0 and 36.
- A negative value in the x-wind field indicates that the wind component is from the left.
- A positive value in the x-wind field indicates that the wind component is from the right.
- A negative value in the H/T wind field indicates a headwind component.
- A positive value in the H/T wind field indicates a tailwind component.
is the headwind and tailwind component of the following:
- TAF: FAFS W/V 050/40
- Variation: 15 degrees West
- Runway: 03L
HW = 32.8 Kts
XW = 22.9 Kts
- Low-level wind shear as an operational problem constitutes a significant hazard to aircraft during take-off and landing.
- Wind shear is a change in wind direction and/or speed.
- Wind shear may occur with height (vertical) or lateral distance (horizontal)
- These changes will change the flight path of the aircraft.
More about wind in the Meteorology course.