As used in this chapter, certain words and terms are defined as follows:
(a) "Aircraft" means any contrivance invented, used, or designed to navigate, or fly in the air (49 U.S.C. §40102).
(b) "Drone" or "Unmanned Aircraft" (UA) means an aircraft that is operated without the possibility of direct human intervention from within or on the aircraft (P.L. 112-95, Section 331);
(c) "Unmanned Aircraft System" or "UAS" means an unmanned aircraft and associated elements, including communication links and components that control the unmanned aircraft, that are required for the pilot in command to operate safely and efficiently in the national airspace system (P.L. 112-95, Section 331).