JET NOISE AT SCHOOLS NEAR LOS ANGELES INTERNATIONAL AIRPORT

In this study, indoor and outdoor measurements of jet aircraft noise were made at seven schools beneath the eastern approach paths to the Los Angeles International Airport. At five elementary schools, the jet noise in the schoolyeards ranged from 96 to 118 dBC and constiuted a high risk of hearing damage for the children. The frequency of jet aircraft overflights averages one per 2-min interval for a total of about 200 per school day (8:30 a.m.-3:30 p.m.). The corresponding jet-noise levels in the classroom (80% of which are not air-conditioned or acoustically treated) ranged from 80 to 96 dBA and caused continued disruption of communication and the learning processes. An investigation of aircraft operation alternatives indicated that the noise could be reduced by 10 dB or more if engine power were properly managed when the aircraft approaches the school areas, or if the aircraft approached at higher altitudes and landed further to the west on the unused 6000-ft-long portion of the 12,000-ft-long runways.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00014966
• Corporate Authors:

  Acoustical Society of America

  335 East 45th Street
  New York, NY  United States  10017
• Authors:
  • LANE, S R
  • Meecham, W C
• Publication Date: 1974-7

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 127-131
• Serial:
  • Journal of the Acoustical Society of America
  • Volume: 56
  • Issue Number: 1
  • Publisher: Acoustical Society of America
  • ISSN: 0001-4966
  • Serial URL: http://asadl.org/jasa/

Subject/Index Terms

• TRT Terms: Aircraft noise; Aircraft operations; Airport noise; Approach; Environmental impact analysis; Environmental impacts; Hearings; Measurement; Noise; Noise control; Schools
• Identifier Terms: Los Angeles International Airport
• Uncontrolled Terms: Noise measurement; Noise reduction
• Old TRIS Terms: Overflight
• Subject Areas: Aviation; Education and Training; Environment; Terminals and Facilities;

Filing Info

• Accession Number: 00155940
• Record Type: Publication
• Source Agency: Massachusetts Institute of Technology
• Files: TRIS
• Created Date: Sep 20 1977 12:00AM