Survey

2021-02-01
Analysis of the Neighborhood Environmental Survey

This 2021 FAA report analyzes the Neighborhood Environmental Survey (NES), a large-scale study examining how aircraft noise affects communities around 20 U.S. commercial airports. Researchers surveyed over 10,000 residents and found that annoyance with aircraft noise increases steadily as noise levels rise, with significantly more people reporting high annoyance than older studies had suggested. The findings provide an updated national curve showing the relationship between measured noise exposure (DNL) and community annoyance, which can inform airport noise policy decisions.

TagsDNL65, FAA, HMMH, Noise, Survey
2021-01-01
Neighborhood Environmental Survey fact sheet

The FAA conducted a large-scale Neighborhood Environmental Survey (NES) of 10,000 people near 20 U.S. airports to measure how aircraft noise affects community annoyance, finding that significantly more people are bothered by noise than older studies suggested — about 66% of respondents were highly annoyed at 65 decibels (DNL) and 20% at 50 decibels. The agency uses the Day-Night Average Sound Level (DNL) metric to measure noise exposure and is reviewing whether its longstanding 65 DNL threshold for 'significant' noise impact should be updated. The FAA is seeking public comment on these research findings before making any changes to official noise policy.

TagsFAA, HMMH, Noise, Survey

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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