Section 423 - Diversion from normal flight; careless operation(a) An aircraft shall not be diverted from a normal flight nor engage in acrobatic maneuvers nor be so operated as to diminish the stability and safety of the aircraft when the aircraft is over a thickly settled portion of a town, city, or village or over a place where a celebration, game, or contest is being held, or over a place where a failure of the aircraft might cause personal injury or damage to property, or under 1,500 feet, unless by special permission of the Federal Aviation Administration and the Agency.(b) No person shall operate an aircraft in a careless or negligent manner so as to endanger the life or property of others.Added 1985, No. 222 (Adj. Sess.), § 2.