The provisions of this Chapter, pertaining to the operation of helicopters, shall not apply to any helicopter operated by the federal government, or a state, county, or city agency engaged in law enforcement, or fire suppression, or going to the aid of any person or the property thereof, so long as the same is operated in accordance with federal and state regulations and by the authorized personnel of said federal, state, county, or city agency.
('65 Code, § 17A-9) (Ord. No. CS-570 § 1 (part))