(a) Exemptions. The total expenditures to be made by the joint board for any purpose in any calendar year shall be as determined by a budget approved by the constituent public agencies on or before the preceding fiscal year, or as otherwise specifically authorized by the constituent public agencies.

(b) Acquisitions Beyond Sums Allotted. No airport, air navigation facility, avigation easement, airport hazard, or real or personal property, the cost of which is in excess of sums fixed therefor by the joint agreement or allotted in the annual budget, may be acquired, established or developed by the joint board without the approval of the governing bodies of its constituent public agencies.

(c) Eminent Domain. Eminent domain proceedings under this part may be instituted by the joint board only by authority of the governing bodies of the constituent public agencies of the joint board. If so authorized, such proceedings shall be instituted in the names of the constituent public agencies jointly, and the property so acquired shall be held by the public agencies as tenants in common.

(d) Disposal of Real Property. The joint board shall not dispose of any airport, air navigation facility, avigation easement or real property under its jurisdiction except with the consent of the governing bodies of its constituent public agencies; provided, that the joint board may, without such consent, enter into contracts, leases or other arrangements contemplated by § 42-3-112.

(e) Regulations and Orders. Any resolutions, rules, regulations or orders of the joint board dealing with subjects authorized by § 42-3-112 shall become effective only upon approval of the governing bodies of the constituent public agencies; provided, that upon approval, the resolutions, rules, regulations or orders of the joint board shall have the same force and effect in the territories or jurisdictions involved as the ordinances, resolutions, rules, regulations or orders of each public agency would have in its own territory or jurisdiction.