United States Department of Transportation
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Abstract:Because of concerns about airport-related noise, the Subcommittee on
Aviation, House Committee on Transportation and Infrastructure, and
several Members of the House of Representatives asked GAO to determine
(1) the types of projects that are eligible for federally authorized funding to reduce airport-related noise or mitigate its effects, (2) the differences in the major methods for measuring the impact of airport-related noise, (3) FAA?s current noise standards for civil subsonic turbojets and the reasons some of those aircraft are not required to comply with these or earlier standards, and (4) the status of FAA?s Land Use Planning Initiative and the major issues the initiative has raised about how best to address airport-related
noise. Airport-related noise emanates primarily from the takeoff and landing of aircraft. Engine maintenance and the taxiing of aircraft on runways are other activities that contribute to airport-related noise. The impact of such noise on communities is usually analyzed in terms of the extent to which the noise annoys people by interfering with their normal activities, such as sleep, relaxation, speech, television, school, and business operations. According to a 1978 study that has become the generally accepted model for assessing the effects of long-term noise exposure, when sound exposure levels are measured by the method that assigns additional weight to sounds occurring at night (between 10 p.m. and 7 a.m.), and those sound
levels exceed 65 decibels, individuals report a noticeable increase in
annoyance.
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