; (d)that the airport master record (Form 5010-1) effective on September 14, 2017 for the airport indicates 45 based aircraft consisting of single engine, multiple engine, and jet engine aircraft. (4) The airport sponsor will complete design of the storage building not later than fiscal year 2018 and initiate construction of the storage building not later than fiscal year 2019. (5) The area of the storage building, or portion thereof, to be funded under this section shall not exceed 6,000 square feet. Federal highway administration Limitation on administrative expenses (highway trust fund) (including transfer of funds) Not to exceed $446,444,304, together with advances and reimbursements received by the Federal Highway Administration, shall be obligated for necessary expenses for administration and operation of the Federal Highway Administration. In addition, $3,248,000 shall be transferred to the Appalachian Regional Commission in accordance with section 104(a) of title 23, United States Code. Federal-aid highways (limitation on obligations) (highway trust fund) Funds available for the implementation or execution of Federal-aid highway and highway safety construction programs authorized under titles 23 and 49, United States Code, and the provisions of the Fixing America's Surface Transportation Act shall not exceed total obligations of $45,268,596,000 for fiscal year 2019: Provided , That the Secretary may collect and spend fees, as authorized by title 23, United States Code, to cover the costs of services of expert firms, including counsel, in the field of municipal and project finance to assist in the underwriting and servicing of Federal credit instruments and all or a portion of the costs to the Federal Government of servicing such credit instruments: Provided further , That such fees are available until expended to pay for such costs: Provided further , That such amounts are in addition to administrative expenses that are also available for such purpose, and are not subject to any obligation limitation or