The Department of Transportation shall have the following powers and duties:

(1) To plan for and establish a long-term policy in regard to the establishment, development, and maintenance of aviation and aviation facilities in the state;

(2) To promote and encourage the use of aviation facilities of the state for air commerce in the state and between the state, other states, and foreign countries;

(3) To cooperate, counsel, and advise with the State Transportation Board in regard to the planning, construction, development, and maintenance of airports, landing fields, and air navigation facilities in the state;

(4) To cooperate, counsel, and advise with municipalities and other political subdivisions of the state and with other departments, boards, bureaus, commissions, agencies, or establishments, whether federal, state, or local, or public or private, for the purpose of promoting and obtaining coordination in the planning for and in the establishment of development, maintenance, and protection of a system of air routes, airports, landing fields, and other aviation facilities in the state.