49 U.S.C. § 40126

(a) In General .— The Administrator of the Federal Aviation Administration may enter into a contract for procurement of severable services for a period that begins in 1 fiscal year and ends in the next fiscal year if (without regard to any option to extend the period of the contract) the contract period does not exceed 1 year. (b) Obligation of Funds .— Funds made available for a fiscal year may be obligated for the total amount of a contract entered into under the authority of subsection (a).