U.S. Code > Title 49 Transportation > SUBTITLE VII—AVIATION PROGRAMS (§§ 40101—50105) > PART B—AIRPORT DEVELOPMENT AND NOISE (§§ 47101—47533) > CHAPTER 471—AIRPORT DEVELOPMENT (§§ 47101—47175) > SUBCHAPTER I—AIRPORT IMPROVEMENT (§§ 47101—47142) > § 47109. United States Government’s share of project costs

§ 47109. United States Government’s share of project costs

(a) General.— Except as provided in subsection (b) or subsection (c) of this section, the United States Government’s share of allowable project costs is—
(1) 75 percent for a project at a primary airport having at least .25 percent of the total number of passenger boardings each year at all commercial service airports;
(2) not more than 90 percent for a project funded by a grant issued to and administered by a State under section 47128, relating to the State block grant program;
(3) 90 percent for a project at any other airport;
(4) 70 percent for a project funded by the Administrator from the discretionary fund under section 47115 at an airport receiving an exemption under section 47134; and
(5) for fiscal year 2002, 100 percent for a project described in section 47102 (3)(J), 47102 (3)(K), or 47102 (3)(L).[1]
(b) Increased Government Share.— If, under subsection (a) of this section, the Government’s share of allowable costs of a project in a State containing unappropriated and unreserved public lands and nontaxable Indian lands (individual and tribal) of more than 5 percent of the total area of all lands in the State, is less than the share applied on June 30, 1975, under section 17(b) of the Airport and Airway Development Act of 1970, the Government’s share under subsection (a) of this section shall be increased by the lesser of—
(1) 25 percent;
(2) one-half of the percentage that the area of unappropriated and unreserved public lands and nontaxable Indian lands in the State is of the total area of the State; or
(3) the percentage necessary to increase the Government’s share to the percentage that applied on June 30, 1975, under section 17(b) of the Act.
(c) Grandfather Rule.—
(1) In general.— In the case of any project approved after September 30, 2003, at a small hub airport or nonhub airport that is located in a State containing unappropriated and unreserved public lands and nontaxable Indian lands (individual and tribal) of more than 5 percent of the total area of all lands in the State, the Government’s share of allowable costs of the project shall be increased by the same ratio as the basic share of allowable costs of a project divided into the increased (Public Lands States) share of allowable costs of a project as shown on documents of the Federal Aviation Administration dated August 3, 1979, at airports for which the general share was 80 percent on August 3, 1979. This subsection shall apply only if—
(A) the State contained unappropriated and unreserved public lands and nontaxable Indian lands of more than 5 percent of the total area of all lands in the State on August 3, 1979; and
(B) the application under subsection (b), does not increase the Government’s share of allowable costs of the project.
(2) Limitation.— The Government’s share of allowable project costs determined under this subsection shall not exceed the lesser of 93.75 percent or the highest percentage Government share applicable to any project in any State under subsection (b).
(d) Special Rule for Privately Owned Reliever Airports.— If a privately owned reliever airport contributes any lands, easements, or rights-of-way to carry out a project under this subchapter, the current fair market value of such lands, easements, or rights-of-way shall be credited toward the non-Federal share of allowable project costs.

[1] See References in Text note below.