with the use of aircraft owned, leased, or chartered by the Department of State may be credited to the Working Capital Fund of the Department and shall be available for expenses related to the purchase, lease, maintenance, chartering, or operation of such aircraft. (2) Scope The requirement and authorities of this subsection shall only apply to aircraft, the primary purpose of which is the transportation of personnel. (d) Aircraft operations and maintenance To the maximum extent practicable, the costs of operations and maintenance, including fuel, of aircraft funded by an Act making appropriations for the Department of State, foreign operations, and related programs shall be borne by the recipient country. 17. Parking fines and real property taxes owed by foreign governments (a) In general Subject to subsection (c), and for each fiscal year, of the funds appropriated pursuant to an Act making appropriations for the Department of State, foreign operations, and related programs for bilateral assistance, international security assistance, multilateral assistance, or export and investment assistance for a foreign country, an amount equal to 110 percent of the total amount of the unpaid fully adjudicated parking fines and penalties and unpaid property taxes owed by the central government of such country shall be withheld from obligation for assistance for the central government of such country until the Secretary of State submits a certification to the Committees on Appropriations stating that such parking fines and penalties and unpaid property taxes are fully paid. (b) Availability of withheld funds Funds withheld from obligation pursuant to subsection (a) may be made available for other programs or activities funded pursuant to an Act making appropriations for the Department of State, foreign operations, and related programs, after consultation with, and subject to the regular notification procedures of, the Committees on Appropriations, provided that no such funds shall be made available for assistance for the