V
Valuable Cargo
A cargo consignment that contains one or more valuable articles (specified in the IATA Cargo Services Conference Resolutions Manual, Resolution 012 or the IATA Security Manual 3.11.2).
Vendor
See Supplier.
Visual Inspection
A visual inspection either directly or by the assistance of a suitable apparatus to determine the state of an area or part.
Visual Meteorological Conditions (VMC)
Meteorological conditions expressed in terms of visibility, distance from cloud, and ceiling, equal to or better than specified minima.

W
Wake Turbulence
Turbulence that forms behind an aircraft as it passes through the air, resulting from vortices formed as the wings produce lift.
Equivalent Terms: Wingtip Vortices, Jet Wash Weapon
An instrument of attack or defense in combat that is normally prohibited from being carried on board an aircraft by a passenger.
Wet Drill
A practical training exercise whereby crew members get into a life raft that is in the water, either by climbing into the raft from the water or boarding the raft directly from an aircraft exit.
Wet-lease (Operational)
The practice whereby an operator (the “lessee”) satisfies its own operational needs by utilising aircraft that is acquired from an external operator (the “lessor”) through a commercial lease agreement; the lessor exercises operational control of such aircraft in operations conducted for the lessee.