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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.

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  • 2025-11-06

    KORD Terminal Chicago O’Hare Tunnel with Moving Walkway

    This image shows the neon-lit underground pedestrian tunnel connecting concourses in Terminal 1 (United Airlines) at Chicago O'Hare International Airport (ORD), featuring Michael Hayden's 1987 art installation 'Sky's the Limit.' The watermark identifies the photo as copyright Nicholas McGowan via JetPhotos.net. This image is unrelated to Sea-Tac Airport or its noise policy.
    TagsAirport, Airports, O'Hare
  • 2025-11-06

    Air Traffic Control Tower

    The air traffic control tower at Seattle-Tacoma International Airport (Sea-Tac), photographed by Anthony Bolante for the Puget Sound Business Journal (PSBJ). The tower's distinctive modernist architecture is visible, along with an American flag and what appears to be a Washington State flag on the structure.
    TagsAir Traffic Control, Airport, ATC
  • 2025-11-06

    Sean Duffy Federal Aviation Administration and Department of Transportation Press Conference

    Two men in suits speak at a podium bearing the U.S. Department of Transportation seal, with a Federal Aviation Administration flag visible in the background. The setting suggests an official FAA or DOT press conference, though the specific individuals, date, and event cannot be confirmed from visible text alone.
    CategoriesNews Stories, Press Release TagsAirport, Aviation Committees, Aviation Week, Press Release
  • 2025-11-01

    Noise Monitor Aircraft Approach with Ground Equipment

    A Brüel & Kjær noise monitoring microphone (visible logo on instrument body) is mounted on a post beside an airport runway, with a Southwest Airlines Boeing 737 on approach to land. The setup appears to document aircraft noise levels at an airport location, consistent with a noise monitoring station.
    TagsAir Traffic Control, aircraft, Airport
  • 2025-10-31

    SeaTac Permanent Noise Monitors with HAWKZ8 final approach

    A map of the Seattle-Tacoma area showing numbered noise monitoring station locations (numbered 1, 15–23, 25, 28) clustered around Seattle-Tacoma International Airport (SeaTac) and extending south through Des Moines, Federal Way, and toward Milton/Fife. The stations appear to track aircraft noise corridors along what is likely the primary north-south flight path, with a dark vertical line indicating the runway centerline or flight track.
    CategoriesResources TagsAirport, Des Moines, Federal Way, Port Of Seattle
  • 2025-10-26

    Heathrow T5 Airport Terminal Building with Aircraft at Gates

    The image shows Terminal 5 at London Heathrow Airport, identifiable by the distinctive curved glass facade designed by Richard Rogers, British Airways livery and Union Jack branding visible on the terminal facade, and HSBC sponsorship signage. Multiple British Airways aircraft are visible at the gates, including what appears to be an Airbus A380. This facility is not related to Seattle-Tacoma International Airport.
    Tagsaircraft, Airline Industry, Airport, Airports
  • 2025-10-25

    Aerial View of Coleman Young (Wayne County) Airport Runway and Terminal Facility

    Aerial photograph showing an airport runway, terminal building, and surrounding residential neighborhood. The image displays aviation infrastructure including the main runway, terminal facilities, and nearby housing developments with green spaces.
    TagsAirport, Terminal
  • 2025-10-03

    Urban Ultrafine Particles – Advisory Group Meeting

    The University of Washington held an Advisory Group Meeting on October 3, 2025, focused on urban ultrafine particles (nano-particles) and their sources, including aviation-related emissions near areas like Sea-Tac Airport. The meeting aimed to foster dialogue, address knowledge gaps from the MOV-UP study, identify priority research questions, and guide scientific research on air quality monitoring. Advisors were asked to provide feedback on study design and methodology, with a time commitment including annual meetings and optional review of study outputs.
    CategoriesMeetings, Regular Events TagsAcademic Journals, Air Quality Monitors, Airport, Atmospheric Science, Aviation Emissions
  • 2025-10-01

    Impacts of Aviation Emissions on Air Quality Near Hanscom Field, Bedford, Massachusetts – Results of a Two-Season Monitoring Campaign

    A comprehensive study measuring ultrafine particles, lead, and other air pollutants from aviation emissions at Hanscom Field across four surrounding Massachusetts towns. The study found that UFP concentrations were up to two-fold higher at downwind sites and often exceeded WHO guidelines, with the highest impacts in Bedford and Lexington.
    TagsAcademic Journals, Air Quality Monitors, Airport, Aviation Emissions, MassPort, Neelakshi Hudda, StudyStudy TopicsAir Quality, Ultrafine Particles
  • 2025-09-15

    SMPS Particle Bin Counts and Geometric Mean at SeaTac North

    This contour plot displays Scanning Mobility Particle Sizer (SMPS) particle bin counts (log10 scale, 2.6–5.0) by particle size (5–382 nm) and local PST time (08:31–12:54) at the SeaTac North monitoring station on September 15, 2025. Brown diamond markers indicate the geometric mean particle diameter over time, generally ranging between approximately 15–30 nm. The chart was generated at 13:08:16 local time on 2025-09-15, with last UTC data at 19:54:26.
    TagsAir Quality Monitors, Airport, Atmospheric Science

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Help study childhood asthma. Get free HEPA filter!

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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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