 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
 |
|---|
"W" Terms and Definitions
| Wake Turbulence | Wingtip vortices generated behind a wing producing lift. Behind a large heavy aircraft they can be powerful enough to roll or even break up a smaller aircraft. |
| WAT | Weight-and-Temperature |
| WEF. | With Effect From |
| WIE | With Immediate Effect |
| Wind Shear | Localised change in wind speed and/or direction over a short distance, resulting in a tearing or shearing effect |
| WIP | Work in progress |
| WP | Waypoint |
| WT | Weight |
| WX | Weather |
| WX NIL | No significant weather, term used in Met reports |