The Port of Seattle's Late Night Noise Limitation Program monitors aircraft noise between midnight and 5:00 a.m. at four locations around Seattle-Tacoma International Airport, with departure thresholds of 91 dB and arrival thresholds ranging from 82 to 89 dB depending on the monitor. In the fourth quarter results presented to the Sea-Tac Stakeholder Advisory Round Table on February 26, 2020, twelve airlines were found to have exceeded noise thresholds, with cargo carriers showing the highest exceedance rates—Cargolux at 89%, China Airlines Cargo at 79%, and EVA Air at 64%. The program includes outreach to airlines with exceedances and tracks feedback and any positive outcomes aimed at reducing late-night noise impacts on surrounding communities.Open full document
Notes
This presentation to the Sea-Tac Stakeholder Advisory Round Table covers the Q4 results of the Late Night Noise Limitation Program at Sea-Tac Airport. The program monitors noise levels between 12:00 am and 5:00 am at four monitoring stations with specific decibel thresholds for arrivals and departures. The report lists 12 airlines that exceeded noise thresholds during Q4, with Cargolux (89%), China Airlines Cargo (79%), and EVA Air (64%) having the highest percentages of operations exceeding limits.