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STNI
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.

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  • NDAA Section 8801
    2025-12-12

    Pilot program for sound insulation repair and replacement passes in Defense bill

    Smith/Murray provide funding. And so many loopholes. The House of Representatives has passed its mandated National Defense Authorization Act for Fiscal Year 2026. Near the end of the bill is Section 8801, language previously put forward by Congressman Adam Smith WA-9 to allow the FAA to provide grant funding for updates to existing sound insulation
    CategoriesNews Stories TagsAdam Smith, FAA, National Defense Authorization Act, Part 150, Sound Insulation
  • 2025-12-12

    The Sound Insulation Treatment Repair and Replacement Program Act

    A legislative proposal by Rep. Adam Smith (WA-09) that would allow the FAA to waive regulations preventing airports from using federal AIP funds to repair or replace defective sound insulation in homes. The bill addresses problems with early noise mitigation programs from the 1980s and 1990s that used poor quality materials or improper installation.
    TagsAdam Smith, Airport Improvement Program, FAA, Noise Mitigation, Sound Insulation
  • 2023 Sound Insulation Treatment Repair and Replacement Program Act Fact Sheet 1 Pdf
    2025-12-12

    The Sound Insulation Treatment Repair and Replacement Program Act

    A legislative proposal by Rep. Adam Smith (WA-09) that would allow the FAA to waive regulations preventing airports from using federal AIP funds to repair or replace defective sound insulation in homes. The bill addresses problems with early noise mitigation programs from the 1980s and 1990s that used poor quality materials or improper installation.
    TagsAirport Improvement Program, FAA, Noise Mitigation, Sound Insulation, Washington
  • Uscode 2023 Title49 Subtitlevii Partb Chap471 Subchapi Sec47133 Pdf
    2025-12-11

    TITLE 49—TRANSPORTATION § 47133 – Restriction on use of revenues

    Federal transportation law section detailing restrictions on how local taxes on aviation fuel and airport revenues can be used, with exceptions for prior agreements and private airport sales. Also includes the Airport Investment Partnership Program provisions for airport privatization.
    TagsAviation Fuel, FAA
  • 2025-12-09

    Vashon Island Fair Skies – What changed?

    A document explaining changes to aircraft arrival patterns at SeaTac airport around 2015, including the introduction of Performance Based Navigation (PBN) technology and lowered flight altitudes. The changes concentrated flight paths over Vashon Island in a narrow corridor, causing increased noise pollution for residents who chose to live there for its peaceful environment.
    TagsFAA, Noise Pollution, PBN, Performance Based Navigation, SeaTac Airport
  • Whatnextgendidtovashon Onepager Pdf
    2025-12-09

    Vashon Island Fair Skies – What changed?

    A document explaining changes to aircraft arrival patterns at SeaTac airport around 2015, including the introduction of Performance Based Navigation (PBN) technology and lowered flight altitudes. The changes concentrated flight paths over Vashon Island in a narrow corridor, causing increased noise pollution for residents who chose to live there for its peaceful environment.
    TagsFAA, Noise Pollution, PBN, Performance Based Navigation, SeaTac Airport
  • FAA SEA Airport Capacity Profile 2018
    2025-12-07

    Airport Capacity Profile: Seattle-Tacoma International Airport

    Airport capacity profile for Seattle-Tacoma International Airport showing hourly throughput capabilities under different weather conditions. Includes current operations capacity rates, recent improvements like Time-Based Flow Management, and future improvements including Wake Recategorization Phase 2.
    TagsAir Traffic Control, FAA
  • 2025-12-01

    Case 25-7439 Docket Ninth Circuit Court of Appeals

    A mediation questionnaire filed in the Ninth Circuit Court of Appeals challenging the FAA’s September 2025 FONSI/ROD for Seattle-Tacoma International Airport Sustainable Airport Master Plan Near-Term Projects. The Cities contend the FAA’s environmental review violated NEPA by using an artificially truncated environmental baseline and failing to assess cumulative impacts.
    TagsCity of Burien, City Of SeaTac, FAA, NEPA, SAMP
  • 2025-11-24

    25-7439 Petition for Review of Agency Order – City of Burien, City of Des Moines, and City of SeaTac v. FAA

    A petition filed in the U.S. Court of Appeals for the Ninth Circuit challenging the FAA’s Finding of Significant Impact/Record of Decision for the Sustainable Airport Master Plan Near-Term Projects at Seattle-Tacoma International Airport. The petition was filed by three Washington cities seeking review of the September 24, 2025 FAA decision.
    TagsCity of Burien, City Of Des Moines, City Of SeaTac, FAA, FONSI, Litigation, Ninth Circuit Court of Appeals, SAMP
  • 2025.11.24 Petition for Review as Filed with Timestamp Pdf
    2025-11-24

    Petition for Review of Agency Order – City of Burien, City of Des Moines, and City of SeaTac v. Federal Aviation Administration

    A petition filed in the U.S. Court of Appeals for the Ninth Circuit challenging the FAA’s Finding of Significant Impact/Record of Decision for the Sustainable Airport Master Plan Near-Term Projects at Seattle-Tacoma International Airport. The petition was filed by three Washington cities seeking review of the September 24, 2025 FAA decision.
    TagsBurien, Des Moines, FAA, FONSI, seatac

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Upcoming Events

  • Port of Seattle Regular Commission Meeting April 28, 2026
    Add to CalendarMTuesday Apr 28: 12:00pm
    17801 International Blvd, Seattle, WA 98158
    2026 04 28 RM Packet Pdf 1

    # New Business Items
    **Order No. 2026-04:** Directs Executive Director to explore a program facilitating secure area access for union business requirements at Seattle-Tacoma International Airport.

    **Resolution No. 3848:** Approves Port's participation in City of Bellevue's Tax Increment Area.

    **Fishermen's Terminal C-15 Building Improvements:** Authorization for Executive Director to approve funding to advertise and execute a major public works construction contract for project completion.

    [...]
  • StART (SEA Stakeholder Advisory Round Table) Meeting
    Add to CalendarMWednesday Apr 29, 5:00pm - 7:00pm
    Zoom Webinar
    Start Meetingagenda 2026429 Pdf 1

    - **SAMP Environmental Review**: Detailed comparison between SEPA Environmental Impact Statement and NEPA Environmental Assessment processes for Near-Term Projects
    - **Community Roundtable Updates**: Progress report on airport stakeholder engagement initiatives
    - **Next Steps**: Implementation timeline for environmental review findings

    **Notable Action Item:**
    Public comment period opened for stakeholder input on airport development plans.

    [...]
  • KCIA Vision 2045 Open House
    Add to CalendarMThursday May 14, 5:30pm - 7:30pm
    KCIA Flight Service Station, 6526 Ellis Ave. S. Seattle, WA 98108
    Kcia Boeing Field Beautyshotkcia

    King County International Airport-Boeing Field is at a pivotal moment, developing comprehensive plans that will determine its operations through 2045. The airport's Vision 2045 Airport Plan and Part 150 Study represent crucial strategic initiatives to balance safe, efficient operations with evolving aviation demands and community needs.

    Join airport officials on Thursday, May 14 (5:30-7:30 p.m.) at the KCIA Flight Service Station to discover the preferred alternative for the airport's future development. This isn't just another planning meeting—it's your opportunity to understand how proposed projects and improvements will directly impact aviation services, local operations, and surrounding communities.

    The Vision 2045 plan incorporates extensive stakeholder feedback and addresses critical infrastructure needs for future demand. Meanwhile, the Part 150 Study focuses on noise compatibility programs, ensuring community concerns remain central to planning decisions.

    With environmental analysis nearing completion and submissions to King County Council and the FAA approaching, this open house offers essential insights into decisions that will shape regional aviation for decades.

    Visit KCIAplanning.com for updates.

    [...]

[See all...]


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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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This is the first study to combine a one-year mobile monitoring campaign with PMF (Positive Matrix Factorization) analysis to simultaneously estimate source-specific air pollution exposures and emission factors of different vehicle types. This methodology can be extended to other metropolitan areas.
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