In this chapter:
(1) "Aeronautics" means:
(A) the art and science of flight of aircraft;
(B) aviation;
(C) the operation, navigation, piloting, maintenance, and construction of aircraft or component parts of aircraft;
(D) air navigation aids, including lighting, markings, and aircraft, ground, and related communications;
(E) air crew and air passenger facilities;
(F) airports and airstrips and their design, construction, repair, maintenance, or improvement; and
(G) the dissemination of information and instruction concerning any of the matters in this subdivision.
(2) "Aircraft" means a device intended, used, or designed for flight in the air.
(3) "Commission" means the Texas Transportation Commission.
(4) "Department" means the Texas Department of Transportation.
(5) "Director" means the director of the Texas Department of Transportation.