The state airways system shall consist of all air navigation facilities available for public use now existing or hereafter established, whether publicly or privately owned or except those under the jurisdiction of the federal government. Jurisdiction over the state airways system in matters of safety is vested in the aeronautics commission. The commission may expend state funds duly appropriated for such purpose in the interest of safety on any or all facilities of the system which serve a useful public purpose and satisfy a public need. The commission may make, promulgate, and amend reasonable safety rules, safety regulations, and safety procedures, and establish minimum safety standards covering the activities for each such facility.