Definitions.
Indianapolis-Marion County Revised Code § 391-501
in effectSec. 391-501. - Definitions.
As used in this article, the following terms shall have the meanings ascribed to them in this section:
Aircraft shall mean any contrivance now known, or hereafter invented, used or designed for navigation or for flight in the air; such term shall include all types of airplanes, helicopters and lighter-than-air dirigibles and balloons.
Sound-amplifying equipment shall mean any machine or device for the amplification of music, the human voice or any other noise or sound; such term shall not be construed as including warning devices on authorized emergency aircraft, or any horn, siren or other warning device used only for traffic safety purposes.
(Code 1975, § 18-40)
Source: Consolidated City of Indianapolis and Marion County, Revised Code (Municode Library, library.municode.com)URL: https://library.municode.com/in/indianapolis_-_marion_county/codes/code_of_ordinances?nodeId=TITIIPUORSA_CH391NU_ARTVAIUSNOSOBR_S391-501DEFetched: 10/27/2026