A tank vehicle used at airports to transport fuel to an airplane for refueling. The main feature of the vehicle is a large tank from which fuel is pumped directly into the aircraft through an aircraft fueling nozzle.
Some larger airports use hydrant refuelers to supply fuel to aircraft. These hydrant vehicles do not, themselves, transport fuel. Rather, they provide a refueling connection between the aircraft and an underground fuel supply.
See also Hydrant refueler.