(1) The department may designate, design, and establish, expand, or modify a state airways system that will best serve the interest of the state.
(2) It may chart such airways system and arrange for publication and distribution of such maps, charts, notices and bulletins relating to airways that may be required in the public interest.
(3) The system shall be supplementary to and coordinated in design and operation with the federal airways system.
(4) The system may include all types of air navigation facilities, whether publicly or privately owned, if such facilities conform to federal safety standards.