The term "aircraft" as used in this chapter means any contrivance now known or hereafter invented, including balloons, airplanes, hydroplanes, helicopters and other similar or dissimilar vehicles used or designed for navigation of or flight through the air, but excluding parachutes or other contrivances designed and used primarily as safety equipment.
(Ord. 122 § 1(a), 1948; Ord. 485, 1964)