Operation regulations.
Indianapolis-Marion County Revised Code § 391-505
in effectSec. 391-505. - Operation regulations.
The noncommercial use of aircraft, with sound-amplifying equipment to make announcements, flying or operated at any time in or over any part of the city shall be subject to the following conditions and regulations:
(1) The only sounds permitted shall be music or human speech;
(2) Sound announcements shall be permitted only between the hours of 11:30 a.m. and 1:30 p.m., and between the hours of 4:30 p.m. and 6:30 p.m.;
(3) Sound-amplifying equipment shall not be operated while an aircraft is flying at an altitude of less than fifteen hundred (1,500) feet;
(4) Sound shall be issued from one (1) loudspeaker only on each aircraft;
(5) The cone or radius of sound from the loudspeaker shall be directed so as to cover at one time an area on the ground of less than seven hundred (700) square yards and so as to avoid hospitals, schools, churches or courthouses, or any area established by the city as a quiet zone;
(6) The human speech and music amplified shall not be lewd, indecent, slanderous, subversive or unlawful;
(7) The volume of sound shall be controlled so that it is not audible on the ground over an area in excess of seven hundred (700) square yards and so that the volume is not unreasonably loud, raucous, jarring, disturbing or a nuisance and annoyance to persons within the area of audibility;
(8) No use thereof shall be violative of any federal or state statute, this Code or any other city ordinance.
(Code 1975, § 18-44)
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_S391-505OPREFetched: 10/27/2026