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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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  • 2023-08-22

    Parking analysis for North Sea-Tac Park

    This document covers planning considerations for North Sea-Tac Park, including an analysis of parking demand across various recreational facilities such as golf courses, sports fields, and trail systems, estimating a total parking need of 516 spaces based on adjusted peak usage. It also addresses air support facility requirements near Sea-Tac Airport, describing clear zone and extended clear zone boundaries where land use is restricted to prevent hazards to aircraft. Within these clear zones, tall buildings, smoke-producing facilities, bird-attracting features, and large gatherings of people are prohibited to minimize risk to approaching and departing aircraft.
    TagsMap, North Sea-Tac Park, NSTP, Parking, Parks, Sea-Tac AirportFolderNSTP
  • 2023-08-14

    FAA Jet Route Chart Centered on Seattle-Tacoma Area – 14/2202z

    A National Weather Service (NWS)-branded interactive aviation map showing FAA high-altitude jet routes (J-routes) radiating from a central fix near Seattle-Tacoma International Airport (Sea-Tac), with surrounding cities including Seattle, Bellevue, Renton, Kent, Tacoma, and Olympia visible. The map is timestamped 14/2202z and displays multiple labeled jet airways (J20, J34, J90, J523, etc.) overlaid on a terrain basemap of the greater Puget Sound region.
    TagsAir Traffic Control, Airspace Study, FAA, Map, Sea-Tac AirportFolderAviation
  • 2023-08-14

    FAA Aviation Weather/Flight Track Map – Seattle-Tacoma Region

    An FAA or aviation weather service map dated the 14th at 2201 Zulu, showing airports, airways, and airspace boundaries (including a pink ADIZ/TRACON boundary) across the Seattle-Tacoma metropolitan area and western Washington state. Visible airport identifiers include SEA (Seattle-Tacoma International), BFI (Boeing Field), PAE (Paine Field/Everett), RNT (Renton), TIW (Tacoma Narrows), OLM (Olympia), and numerous others, with a weather.gov watermark visible in the lower right.
    TagsAir Traffic Control, FAA, Flight Tracks, Sea-Tac Airport, TRACONFolderAviation
  • 2023-08-14

    Sea-Tac Airport Sustainable Airport Master Plan (SAMP): Near-Term Project Environmental Review Map

    The Sea-Tac Airport Sustainable Airport Master Plan (SAMP) Near-Term Project Environmental Review outlines a comprehensive set of planned improvements at Seattle-Tacoma International Airport, covering airside, landside, terminal, cargo, and airport support facilities. Key projects include taxiway and runway upgrades, a new second terminal with associated roads and parking, cargo facility expansions, and sustainability initiatives such as sustainable aviation fuel infrastructure and consolidated de-icing tanks. These near-term projects are intended to enhance airport capacity, safety, and operational efficiency while supporting the airport's long-term growth strategy.
    TagsEnvironmental Review, Map, Port Of Seattle, SAMP, Sea-Tac Airport, Sustainable Airport Master PlanFolderSAMP
  • 2023-08-11

    EVA Air Boeing 787-10 on Final Approach to Sea-Tac Airport

    An EVA Air Boeing 787 Dreamliner (registration partially visible, B-prefix Taiwanese registry) photographed on final approach with landing gear extended. The aircraft displays EVA Air's distinctive white livery with green tail featuring the airline's star logo, consistent with operations at Sea-Tac Airport where EVA Air operates transpacific routes.
    Tagsaircraft, Sea-Tac Airport, Simple Flying, StARTFolderStART
  • Delta Air Lines Regional Jet at Gate with Ground Support Vehicles

    A Delta Air Lines regional jet aircraft is docked at a jet bridge bearing the Delta logo and triangular livery. Ground support vehicles marked 'DELTA' with unit numbers 521518 and 521519 are visible on the tarmac, with a city skyline in the background.
    Tagsaircraft, Delta, Sea-Tac AirportFolderAirlines
  • Sea-Tac Airport South Concourse Tarmac With Multiple Airline Gates

    An elevated view of the Sea-Tac Airport tarmac showing multiple airlines at gates, including Delta Air Lines (two aircraft in foreground), Virgin Atlantic, Icelandair, and Alaska Airlines liveries visible. The image is credited to photographer Anthony Bolante for the Puget Sound Business Journal (PSBJ), as shown in the watermark.
    TagsAlaska Air, Puget Sound Business Journal, Sea-Tac AirportFolderTerminal
  • Flight Tracking Map of Seattle Area Aircraft and Blue Angels Flight Path Change

    A real-time flight tracking map centered on the Seattle, Washington metropolitan area showing multiple aircraft in flight, including Alaska Airlines flights AS1304, AS934, and AS347; Delta Air Lines flights DL434, DL1517; Korean Air flight KE41; and several general aviation aircraft (N704ZP, N6040P, N1115U, N718TE, N303LK, N93124, N97662, N94061). A popup identifies a vessel named 'RELIANCE' routing USSEA to USPWT, dimensions 76x26 ft, observed approximately one minute prior to the screenshot.
    Tagsaircraft, Alaska Air, Blue Angels, Flight Tracks, Sea-Tac AirportFolderAviation
  • 2023-07-30

    Aircraft noise environment and land use issues near Sea-Tac Airport

    This document outlines several key challenges related to aircraft noise near Seattle-Tacoma (Sea-Tac) Airport. It notes that existing noise measurement systems lack the precision needed by planners, residents, and courts, while federal FAA funds cannot be used to purchase noise-affected lands unless they serve specific airport purposes. Additional concerns include restricted HUD/VA mortgage financing in high-noise areas, the potential negative impact on local tax bases if the Port of Seattle acquires large amounts of noise-sensitive land, and widespread property owner anxiety over declining home values and marketability.
    TagsLand Use, Noise, Port Of Seattle, Property Values, Sea-Tac AirportFoldermisc
  • Sea-Tac Airport Comparison of Air Carrier Operations Forecasts vs. Actuals, 1975–2010

    A scatter plot comparing multiple historical and projected annual air carrier operations forecasts for Seattle-Tacoma International Airport, spanning approximately 1975–2010. The chart overlays actual operations data against projections from sources including 1997 FAA and ACC (Hockaday) projections, the 1992 Flight Plan Project Final EIS, the 1996 Master Plan Update FEIS, the 1987 PSCOG Draft EIS, and several earlier studies dating back to a 1976 Sea-Tac Communities Plan, illustrating how successive forecasts consistently overestimated growth relative to actual operations.
    TagsEIS, FAA, Forecast, Sea-Tac AirportFolderStatistics

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Upcoming Events

  • Stay Grounded Event: Night trains, not night planes!
    Add to CalendarMSunday Sep 13: 12:00am
    Ntnnp social media3

    For the past two years, more than 220 initiatives from 15 countries have declared September 13th as the International day for the ban of night flights at airports. In parallel, activists across Europe have been gathering for pyjama parties for night trains – coordinated in 2024 and 2025 by Back on Track and Stay Grounded.

    [...]
  • Burien Airport Committee Meeting September 15, 2026
    Add to CalendarMTuesday Sep 15: 6:00pm
    400 SW 152nd St, Burien, WA 98166
    Burien airport committee 15 sep 2026 agenda pdf pdf

    a) Part 150 Noise Study (Emily Inlow-Hood) — 15 minutes
    b) SAMP Update and Next Steps (Brian Davis and Sarah Moore) — 15 minutes
    c) Legislative Updates — 10 minutes
       • SCA (Sarah Moore)
       • Work with Sen. Orwall (Brian Davis)
    d) StART Reorganization (Jeff Harbaugh and Karen Veloria) — 10 minutes

    [...]

[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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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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