The FAA's Noise Policy Review examines the growing problem of aircraft noise around airports, comparing historical and current annoyance levels among nearby residents. A Neighborhood Environmental Survey found a substantial increase in the percentage of people highly annoyed by aircraft noise, with annoyance rising consistently across all levels of noise exposure — well above what older models like the Schultz Curve had predicted.

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An FAA presentation reviewing the noise problem in aviation, both historically and currently. It presents complaint data from airport communities, compares the Schultz Curve with a new National Curve from the Neighborhood Environmental Survey, and illustrates how equivalent DNL 65 noise exposure can result from varying numbers of flight events. The survey results show a substantial increase in annoyance from aircraft noise across various levels of noise exposure.

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As the source for federal transportation grants, the Puget Sound Regional Council was charged with developing a system to meet the growing need for commercial aviation. When the search for a second airport failed, they authorized the Port of Seattle to build the Third Runway, with a mandate to develop a noise abatement and mitigation program. In their effort to stop the Third Runway, the ACC argued over every detail of the Port's efforts--including property buyouts and sound insulation. The dispute was meant to be settled by a three member Expert Arbitration Panel. This is their final report. It finds 2-1, that the Port's program was insufficient in several respects. Despite that, funding for the Third Runway was approved by the PSRC, and the 'Port Package' program, proceeded largely unchanged. Expert Arbitration Panel's final decision finding that the Port of Seattle had not shown sufficient reduction in real on-the-ground noise impacts to satisfy noise reduction conditions required for approval of a third runway at Sea-Tac International Airport. The majority decision concluded the Port's noise abatement programs were insufficient despite being impressive in scope.

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