The secretary of transportation is hereby empowered to:
(1) Act as the agent of sponsors located in the state;
(2) accept in behalf of the sponsors and disburse to them all payments made pursuant to agreements under the federal airport act;
(3) acquire by purchase, gift, devise, lease, or otherwise, any property, real or personal, or any interest therein, including easements, necessary to establish or develop airports;
(4) engage in airport systems planning on a statewide basis; and
(5) undertake airport development, or provide financial assistance to public agencies within the state for carrying it out.