; and (B) fuel-efficient aircraft that are on the market or in production. (2) Commitment requirement In carrying out the program established under subsection (a), the Secretary shall issue such regulations as are necessary to set requirements for the commitment to purchase a fuel-efficient aircraft described in subsection (a), including a timing requirement for the purchase of a fuel-efficient aircraft. (d) Use of purchased aircraft Notwithstanding any other provision of law, the Secretary may sell, to an air carrier or eligible foreign air carrier, parts or components of aircraft purchased under this division. (e) Regulations Not later than 30 days after the date of enactment of this Act, the Secretary shall issue such regulations as are necessary to carry out this section. (f) Authorization of appropriations There is authorized to carry out the program established under this section $1,000,000,000 and such sums shall remain available until expended. (g) Definitions In this section: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Aircraft manufacturer The term aircraft manufacturer has the meaning given such term in section 44301 of title 49, United States Code. (3) Eligible foreign air carrier (A) In general The term eligible foreign air carrier means a foreign air carrier as such term is defined in section 40102 of title 49, United States Code. (B) Exclusion The term eligible foreign air carrier does not include a foreign air carrier that— (i) is domiciled in a country that is a state sponsor of terrorism