

Aviation Terms
| Title | Description |
| W | Whiskey |
| Wait Time | The time an aircraft is waiting on the tarmac for the departure of the next leg of its air charter itinerary. |
| Waypoint | Waypoints are sets of coordinates that identify a point in physical space. Waypoints have only become widespread for navigational use by the layman since the development of advanced navigational systems, such as the Garmin G-1000, Rockwell Collins Pro Line and Honeywell Epic systems. |
| Weight and Balance | When the weight of the aircraft is at or below the allowable limit(s) for its configuration (parked, ground movement, take-off, landing, etc.) and its center of gravity is within the allowable range, and both will remain so for the duration of the flight, the aircraft is said to be within weight and balance. Different maximum weights may be defined for different situations; for example, large aircraft may have maximum landing weights that are lower than maximum take-off weights (because some weight is expected to be lost as fuel is burned during the flight). |
| Wet Lease | Is basically ACMI. The period can go from one month to usually one or two years. Everything less than one month can be considered as ad-hoc charter. |
| Wilco | Will Comply. |
| Wing | A lifting surface of an airplane/aeroplane or sailplane. |
| Wing Flaps | Wing flaps are moveable parts on the trailing edge of a wing that angle down to give it greater camber, increasing both its lift and aerodynamic drag. As flaps are extended, the stalling speed of the aircraft is reduced, which means that the aircraft can fly safely at lower speeds (especially during take off and landing). |
| Wing Loading | Wing loading is the loaded weight of an aircraft divided by the area of its wings. Lower wing loading designs need less power to achieve flight, operate at lower speeds, and have greater maneuverability. High wing loadings require more power, fly faster, and have decreased maneuverability. The faster an aircraft flies, the more lift is produced by each unit area of wing, so a smaller wing can carry the same weight in level flight, operating at a higher wing loading. |
| Winglet | A short, almost vertical stabilizing fin projecting from the tip of an aircraft wing. They are known to improve heading characteristics and fuel efficiency. |
| Wyvern | Wyvern provides specialized aviation services to companies that manufacture, finance, operate, maintain, and market commercial and business aircraft, as well as providing products and services to end-user consumers worldwide. Wyvern is a worldwide leader in performing on-site safety audits for corporate flight departments, charter operators, and commercial airlines. |







