The Commission shall have and exercise the following powers and duties.
(A) General. The Commission has all the powers in relation to airports granted to cities under state law except powers to sell the airport.
(Iowa Code § 330.21)
(B) Budget. The Commission shall annually certify the amount of tax to be levied for airport purposes, and upon the certification the Council may include all or a portion of the amount in its budget.
(Iowa Code § 330.21)
(C) Funds. All funds derived from taxation or otherwise for airport purposes shall be under the full and absolute control of the Commission for the purposes prescribed by law, and shall be deposited with the Clerk to the credit of the Airport Commission, and shall be disbursed only on the written orders of the Airport Commission, including the payment of all indebtedness arising from the acquisition and construction of airports and the maintenance, operation and extension thereof.
(Iowa Code § 330.21) (1999 Code, § 26.07)