No person shall use any airport as a place to conduct an aviation school, air college, or flying school unless it is officially recognized by the U.S. Department of Transportation, acting through the Federal Aviation Administration, and has first obtained a lease or permit from the city, or a sublease or permit from one of the city's tenants on the airport. The director shall have the authority to promulgate rules and regulations deemed appropriate for each airport at which such training is conducted. (Ord. Nos. 8213; 14384; 31690)