Glossary Papakupu
Explanations of abbreviations and acronyms.
- VAI
- The trade association for the global civil vertical-aviation industry; formerly the Helicopter Association International (HAI), it changed its name to reflect the growth of non-helicopter vertical aviation, including drones.
- VAI
- Vertical Aviation International
- Veer-off
- An aircraft departs the side of a runway
- VEMD
- Vehicle and Engine Multifunction Display
- Vent line
- A line, normally coloured red and white, used to open a vent at the top of an envelope and increase the rate of descent.
- Vessel's flag state
- The country where a ship is registered.
- Vessel's trail
- A residual radar image that represents a vessel’s past track over a user-defined period of time.
- Vessels of opportunity
- Nearby commercial and recreational vessels used to assist with a response.
- VFR
- Visual flight rules
- VHF
- Very high frequency
- Virtual aid to navigation
- A virtual aid to navigation is a navigational feature or hazard that is displayed on a vessel’s chart plotter, AIS display or other receiving equipment within range.
- Visible moisture
- Cloud or freezing rain
- Visual
- A ‘visual’ call provides confirmation that: the pilot is able to maintain continuous visual reference with the terrain ahead: the visibility is equal to or greater than the minima prescribed for the approach; and the pilot is able to make a normal landing.
- VOLMET
- An aviation weather forecast service for selected airfields, transmitted over a five-minute interval every 30 minutes on specified high-frequency radio channels (AIP GEN 3.5, p. 30).
- Voyage charter
- When a vessel and crew are hired for a voyage carrying a specified cargo between a load port and a discharge port
- VRS
- Vortex Ring State
- VTS
- Vessel Traffic Service providing navigational assistance and monitoring