Definition
A short-range VOR navigation station, typically located on or near an airport, that transmits VHF radio signals usable for navigation out to approximately 25 nautical miles and up to 12,000 feet above the station. It is the lowest-power class of VOR in the standard service-volume system and is intended to support arrivals, departures, and approaches in the immediate terminal area rather than en route navigation.
Plain English
A small, short-range VOR ground station built to serve aircraft flying close to a specific airport. It works the same way as any other VOR but only reaches out to about 25 miles, because it is meant for traffic arriving at, departing from, or making an approach to that airport.
Context Anchor
Seen on charts, approach procedures, and navigation discussions for flight near an airport.
Derivation
‘Terminal’ here means the area immediately around an airport — the start and end (terminus, Latin for ‘end point’) of a flight. ‘Omnidirectional’ comes from Latin omni- (‘all’) and ‘directional,’ meaning the station radiates usable signals in every direction. So a TVOR is an all-direction VHF navigation station serving the airport terminal area.
Why Pilots Care
It supplies reliable directional guidance close to the airport where precise positioning is required for safe arrival and departure routing.
Grounding Statement
Picture a local direction reference centered near an airport, useful for nearby aircraft rather than for long-distance navigation.
Intuition Check
“Terminal” does not mean the passenger building here. It means the airport-area environment where aircraft are arriving, departing, and maneuvering nearby.
Example Sentence 1
The approach plate showed the final approach course tracking inbound on the TVOR located on the field.
Example Sentence 2
Because the station serves only the local area, its signal is used primarily for airport arrivals rather than long cross-country legs.