TagPart 150(263)

The Quiet Skies Coalition challenges the FAA's Categorical Exclusion (CATEX) for new turboprop flight routes over Burien, Washington, arguing that the FAA's own noise analyses show significant increases in noise levels that exceed the agency's 1.5 dB DNL significance threshold — contradicting the FAA's claim of no environmental impact. The coalition contends that the FAA's reliance on an outdated 2013-2018 Sea-Tac Part 150 noise study, which failed to account for a 51% increase in airport operations, led to inaccurate noise assessments and improper use of a categorical exclusion. Community members and the City of Burien are urged to join legal and political efforts to challenge the FAA and Port of Seattle's authority over flight path decisions affecting residents from Shoreline to Federal Way.

A Burien Airport Committee member named Sharyn argues that Sea-Tac Airport's 2013 Part 150 noise study is dangerously outdated, as actual flight operations have been growing at roughly 9% per year — far outpacing the Port's own projections. Her analysis suggests Sea-Tac will reach its 2034 capacity forecast as early as 2020, meaning real noise impacts on surrounding communities like Seahurst are already well beyond what official noise maps show. She calls on the City of Burien to demand that the Port update its noise modeling immediately rather than waiting until after 2021.

Burien resident and former Boeing Field Noise Officer Sharyn Parker testified in support of HB 1683, arguing that the Port of Seattle deliberately understated Sea-Tac Airport's growth projections to avoid alarming nearby communities, while simultaneously planning a multi-billion dollar expansion — leaving residents exposed to increasing noise and emissions without adequate mitigation. She points to the Port's 2013-2018 Part 150 Noise Study becoming outdated just two years after approval, and a four-year delay in implementing approved sound insulation measures, as evidence of mismanagement and misleading communications. Parker and coalition members are calling for nighttime cargo flights to be offloaded to a new regional airport, contending that Sea-Tac has exhausted both its physical footprint and airspace capacity.

This document presents the opening materials from a December 13, 2023 StART (Stakeholder Advisory Round Table) meeting for the Seattle-Tacoma International Airport Part 150 Study, a federally guided process for assessing and managing aircraft noise impacts. The study is being conducted by ESA, an environmental aviation consultancy with experience at more than 180 airports nationwide and over 25 completed Part 150 Studies. The meeting introduced the ESA project management team and outlined the firm's qualifications for leading Sea-Tac's noise compatibility planning effort.

Aviation noise consultant Vince Mestre explains to the Port of Seattle why changing the FAA's 65 DNL noise contour standard — the threshold used to determine acceptable aircraft noise near residential areas — would likely require an act of Congress rather than a simple regulatory update. The 65 DNL standard is embedded in at least three federal regulations and orders (CFR 14 Parts 150 and 161, and FAA Order 1050.1F), all of which trace their authority back to enabling legislation such as the Aviation Safety and Noise Abatement Act (ASNA) of 1978 and the Airport Noise and Capacity Act (ANCA) of 1990. Because the FAA's rulemaking authority is granted and bounded by those Congressional statutes, modifying ASNA would most likely be required before the FAA could formally lower or otherwise change the noise compatibility standard.

Resolution No. 3257 of the Port of Seattle Commission establishes the Mobile Home Airport Compatibility Program, which provides financial assistance of up to $12,000 per mobile home to help relocate residents from mobile home parks near Seattle-Tacoma International Airport that are being converted to airport-compatible land uses. Park owners who participate must grant an avigation easement to the Port, restrict future property use to airport-compatible purposes, and ensure residents receive an approved relocation plan. The program was created to implement Measure M2d of the 1993 FAR Part 150 Noise Remedy Program amendments, approved by the FAA in May 1994.

Minutes from a September 12, 2022 joint workshop between the Naples, Florida City Council and Naples Airport Authority cover discussions on the Airport Master Plan, noise reduction efforts, and community concerns about increasing jet traffic. Key topics included raising aircraft flight path ceilings to reduce noise, the possibility of reclassifying Naples as a Class C airport, and whether the Master Plan's growth projections were already outdated given a 40% surge in jet traffic. Residents and neighborhood association representatives called for equitable distribution of noise impacts and urged immediate action rather than waiting for a formal noise study to be completed.

This FAQ document from the Port of Seattle addresses common questions about noise management at Seattle-Tacoma International Airport, including how and when the third runway is used, why the Port cannot impose noise-based restrictions on runway operations, and what types of noise mitigation projects qualify for FAA funding. It outlines the history of the Port's noise reduction efforts, such as home acquisitions, insulation programs, and the Fly Quiet Incentive Program, and explains the goals of the Part 150 Noise Study process. The document also highlights the economic importance of Sea-Tac to the Puget Sound region while acknowledging the challenges of reducing noise in a densely populated area around a major international airport.