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STNI

STNISea-Tac Noise.Info

  • Solve for Sea-Tac. Solve for every airport.
  • Since 2016, working to obtain justice for everyone living under the flight path.
  • Less Noise. Cleaner Air. Better Public Health. Compensation.
  • Everything you think you know about the airport is wrong.

Category : Frequently Asked Questions(10)

Quick answers to the most often asked questions, with links to take a deeper dive.

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  • Part 150 for Dummies

    Read this, including the recent update, and then attend the upcoming Port of Seattle Part 150 workshops.
    CategoriesExplainers, Frequently Asked Questions, News Stories TagsDNL65, FAA, FAA Density Guidelines, Part 150
  • Recommended Legislation

    A list of the changes to City, State and Federal laws we'd like to see, along with key legislation in process at the State and Federal levels.
    CategoriesFrequently Asked Questions, Legislation TagsHB1948, Legislation, RCW, SB5652
  • Make a complaint

    This page is for community members who wish to make a complaint about a <em>single</em> event, including a particularly noisy flight.
    CategoriesFrequently Asked Questions
  • Air purifiers

    Should you get an air purifier? If you live near the flight path, the answer is ‘Yes’. Not only because of the aviation emissions, but also because of roadway emissions, the increasing prevalence of wildfires, and, if you have a Port Package, the increased risk of indoor mold. So many choices… However, the question of
    CategoriesFrequently Asked Questions TagsAHAM, air filtration, Corsi-Rosenthal, HEPA Filters
  • How do I determine if I have a Port Package or Avigation Easement?

    Your first step is to try the Port Package Lookup-Upper, which can locate over 90% of the sound insulation systems funded by the Port of Seattle from 1987-2024. If you cannot find it there, you can call the Port of Seattle Noise Programs Office. You can also find out iif there is an Avigation Easement
    CategoriesFrequently Asked Questions TagsAir Rights, Avigation Easement, Parcel Viewer, Port Packages, Property Rights
  • Property Tax Appeal Cookbook

    Sorry to be a tease but it’s not ready yet. This is the second most requested topic on the entire site so we decided it might be a good idea to put up a placeholder to describe what we’re doing. As of 1 September 2019, we’ve had nine homeowners successfully appeal their value assessments and
    CategoriesFrequently Asked Questions TagsKing County, property tax
  • Are the airplanes getting louder and lower?

    No. And maybe. Objectively speaking, individual aircraft flyovers near Sea-Tac Airport are not getting lower or louder. (Before you click away in disgust, note that some of our members live as low as ‘760’, ie. when correcting for sea level less than 400 feet directly under the belly of an aircraft. No one is more
    CategoriesExplainers, Frequently Asked Questions TagsNoise
  • Second Airport

    This provides a portal for information concerning the progress towards a second airport, which was studied and debated by the Commercial Aviation Coordinating Committee (or as they refer to themselves 'the CACC') from 2020-2023
    CategoriesFrequently Asked Questions, History TagsCACC, Commercial Aviation Coordinating Commission, Second Airport
  • So You Want A Port Package? Start Here

    Thanks for contacting us. Why Bother Reading This? Getting a Port Package is a process. A long process that  will likely take several years. Really. Even if they say ‘yes’, right away. It’s complicated and frustrating and confusing and we know you don’t want to hear that because you’re already upset by the noise. So
    CategoriesFrequently Asked Questions TagsPort Packages
  • Why Can’t We Have A Curfew?

    Blame it on ANCA , the Airport Noise And Capacity Act Of 1990. Airport law–specifically the history of how communities lost their rights–is long. You can read a short history at our Airport Law Cheat Sheet. But one question people have is WHY CAN’T WE SLEEP AT NIGHT? So here is a summary of. The
    CategoriesExplainers, Frequently Asked Questions TagsANCA, Curfew, Protected Articles, Runway Use Agreement
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Upcoming Events

  • Port of Seattle Regular Commission Meeting September 22, 2026
    Add to CalendarMTuesday Sep 22: 12:00pm
    17801 International Blvd, Seattle, WA 98158
    2026 09 22 rm packet pdf

    Order of Business 10:30 a.m. 1. Call to Order 2. Executive Session – if necessary, pursuant to RCW 42.30.110 (executive sessions are not open to the public) 12:00 p.m. – Public Session Reconvene or Call to Order and Pledge of Allegiance 3. Approval of the Agenda 4. Special Orders of the Day 4a. Presentation of

    [...]
  • Highline Forum Agenda – September 23, 2026
    Add to CalendarMWednesday Sep 23, 2:30pm - 4:30pm
    City of Des Moines, Police Services Building,
    Highline forum agenda final 23sept2026 pdf

    Highline Forum Agenda Theme: Part 150 Update and PortJobs Overview 2:30pm – Convene Meeting/Introductions Port Co-Chair, Commissioner Mohamed 2:35pm – Public Comments Audience The meeting will be held in person and virtually. Those wishing to provide public comment may: 1) Deliver public comment via email; 2) Deliver public comment via Microsoft Teams; or 3) Deliver

    [...]

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Issues

Sea-Tac Airport is currently undergoing the largest and longest expansion in its history, collectively known as the Sustainable Airport Master Plan (SAMP). Some of it you can already hear, but you’re probably not aware of what it all means. Here’s what you need to know.
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Read This!

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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Subscribe to the only podcast devoted to helping people under the flight path everywhere. It’s definitely not just about noise!

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