Special fuel means fuel oils and all combustible gases and liquids suitable for the generation of power for propulsion of motor vehicles or turbine-powered aircraft, and includes any substance used for that purpose, except that it does not include motor fuel. Kerosene shall not be considered to be a special fuel, unless blended with other special fuels for use in a motor vehicle with a diesel engine. Methanol shall not be considered to be a special fuel unless blended with other special fuels for use in a motor vehicle with a diesel engine.
Fossil fuel-fired means the combustion of fossil fuel or any derivative of fossil fuel, alone or in combination with any other fuel, independent of the percentage of fossil fuel consumed in any calendar year (expressed in mmBtu).
Boiler Fuel means natural gas used as fuel for the generation of steam and in internal combustion turbine engines for the generations of electricity.
Universal Digital Loop Carrier (UDLC) means the DLC system that has a CO terminal channel bank that is connected to the CO switches on the analog side.
Transit Passenger means a passenger who arrives at the airport in an aircraft and departs from the airport in the same aircraft, where such an aircraft is operating a through flight transiting the airport, and includes a passenger in transit through the airport who has to depart in a substituted aircraft because the aircraft on which the passenger arrived has been declared unserviceable.