Airport and Airway Trust Fund: Declining Balance Raises Concerns over Ability to Meet Future Demands, GAO-11-358T, February 03, 2011
“The Trust Fund provides the primary source of funding for FAA and receives revenues principally from a variety of excise taxes paid by users of the national airspace system. The excise taxes are imposed on airline ticket purchases and aviation fuel, as well as the shipment of cargo. Revenues deposited in the Trust Fund are subject to congressional appropriations. In addition to Trust Fund revenues, in most years, General Fund revenues have been used to help fund FAA operations.”
