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Reply to "Airplane noise concerns overblown?"
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[quote=Anonymous]To describe the effects of environmental noise in a simple, uniform and appropriate way, the day-night average sound level (DNL) noise metric is used. DNL is a metric that reflects a person's cumulative exposure to sound over a 24-hour period, expressed as the noise level for the average day of the year on the basis of annual aircraft operations. FAA limit above which residential land use is not advisable is 65 dB. Per the 2018 study, 400 flights per day from DCA produce noise levels in northwest DC which at or above 65 dBA, the level at which speech communication begins to be impaired. That if true looks like the DC flight path neighborhoods are teetering on the edge of being condemned. By no stretch is it not a big deal. If this continues you’ll be selling your house to the eminent domain in a decade.[/quote]
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