Texas Transportation Code - TRANSP § 21.001. Definitions

(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.