If an amount apportioned to an airport under section 47114(d)(2)(A) is not obligated within the time specified in paragraph (1), and the airport is located in a State participating in the State block grant program under section 47128, the amount shall be made available to that State under the same conditions as if the State had been apportioned the amount under section 47114(d)(2)(B).

At least 35 percent, but not more than $200,000,000, for grants for airport noise compatibility planning under section 47505(a)(2), for carrying out noise compatibility programs under section 47504(c), for noise mitigation projects approved in an environmental record of decision for an airport development project under this title, for airport development described in subparagraphs (O), (P), (Q), and (W) of section 47102(3), for airport development described in section 47102(3)(F), 47102(3)(K), or 47102(3)(L), and for water quality mitigation projects to comply with the Act of June 30, 1948 (33 U.S.C. 1251 et seq.), approved in an environmental record of decision for an airport development project under this title. The Secretary may count the amount of grants made for such planning and programs with funds apportioned under section 47114 in that fiscal year in determining whether or not the requirements of the preceding sentence are being met in that fiscal year. The Secretary shall provide not less than two-thirds of amounts under this subparagraph and paragraph (3) for grants to sponsors of small hub, medium hub, and large hub airports.

At least 4 percent to sponsors of current or former military airports designated by the Secretary under section 47118(a) of this title for grants for developing current and former military airports to improve the capacity of the national air transportation system and to sponsors of noncommercial service airports for grants for operational and maintenance expenses at any such airport if the amount of such grants to the sponsor of the airport does not exceed $30,000 in that fiscal year, if the Secretary determines that the airport is adversely affected by the closure or realignment of a military base, and if the sponsor of the airport certifies that the airport would otherwise close if the airport does not receive the grant.

$150,000,000; minus

the amount made available under paragraph (1)(A) in the preceding fiscal year.

If the fiscal year for which a finding is made under paragraph (1) with respect to an apportionment is not the last fiscal year of availability of the apportionment under subsection (b), the Secretary shall restore to the apportionment an amount equal to the amount of the apportionment used under paragraph (1) for a discretionary grant whenever a sufficient amount is made available under section 48103.

If restoration under this paragraph is made in the fiscal year for which the finding is made or the succeeding fiscal year, the amount restored shall be subject to the original period of availability of the apportionment under subsection (b). If the restoration is made thereafter, the amount restored shall remain available in accordance with subsection (b) for the original period of availability of the apportionment plus the number of fiscal years during which a sufficient amount was not available for the restoration.

Of an amount newly available under section 48103 of this title, an amount equal to the amounts restored under paragraph (2) shall not be available for discretionary grant obligations under section 47115.

Subparagraph (A) does not impair the Secretary’s authority under paragraph (1), after a restoration under paragraph (2), to apply all or part of a restored amount that is not required to fund a grant under an apportionment to fund discretionary grants.