This document summarizes a June 14, 2021 meeting of the StART Aviation Noise Working Group, which advises the Port of Seattle on noise issues around Seattle-Tacoma International Airport. Key topics included an update on the proposed glideslope angle adjustment for Runway 34R (recommending proceeding with a 3.0-degree change), an analysis of noise abatement departure profiles showing that the Distant NADP currently used by most airlines benefits the majority of affected neighborhoods, and a review of the Late-Night Noise Limitation Program highlighting that FedEx Express, China Airlines Cargo, and Amazon Prime Air had the highest late-night noise exceedances. The group agreed to continue monitoring departure profiles without further action and to pursue renewed outreach to carriers with high late-night noise levels.Open full document
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Meeting summary of the StART Aviation Noise Working Group covering three main topics: the RWY 34R glideslope adjustment progress, further analysis on noise abatement departure profiles (NADPs), and enhancements to the Late-Night Noise Limitation Program. The group reached consensus to monitor noise abatement departure profiles without further action, and the Port presented its recommendation to proceed with a 3.0-degree glideslope adjustment for RWY 34R.