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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.

TagRunways(144)

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  • 2023-06-07

    Highline Forum: Are arrivals lower now than they were a couple of years ago?

    A Highline Forum presentation examining whether aircraft arrival numbers at Seattle-Tacoma International Airport have decreased compared to a few years earlier. The analysis uses one month of arrival flight track data from June 2013, June 2015, and June 2017 across Sea-Tac's three parallel runways (16L/34R, 16C/34C, and 16R/34L). June was chosen as a representative month because it typically features a balanced mix of north and south flow operations, Instrument Landing System (ILS) and visual approaches, and an average volume of aircraft traffic.
    TagsFlight Tracks, Highline Forum, Port Of Seattle, Runways, Sea-Tac AirportFolderHighline Forum 2017
  • MSE wall cross-section, Miller Creek buffer — Third Runway embankment

    Engineering cross-section drawing labeled 'Exhibit 2: Aircraft Adjacent to 179 Drop From Third Runway,' produced by the Port of Seattle / Sea-Tac International Airport for the Miller Creek Instream and Buffer Enhancements project. The drawing (sheet 291Z81C17, detail S11A-XXXI-C11) shows the embankment profile with an MSE retaining wall, replacement channel, silt fence, security road, rock underdrain, and a minimum 50-foot creek buffer for Miller Creek, with elevation and horizontal scales and a wide-body aircraft silhouette for scale reference.
    TagsMechanically Stabilized Earth, Miller Creek, Port Of Seattle, Runways, Sea-Tac Airport, Third RunwayFolderThird Runway
  • Aging, unreliable runway safety device leaves U.S. airports vulnerable

    By Alan Levin  A crucial safety system that’s relied on to avoid potentially fatal collisions at major U.S. airports is aging and plagued by outages that have left travelers unprotected for months at a time. At some airports, it hasn’t ever been installed. The technology — which tracks vehicles on or near runways to alert
    CategoriesFrom The Web TagsAirport Surface Detection Equipment, ASDE, Bloomberg, FAA, Runways, Safety, Seattle Times
  • Sea-Tac Airport Satellite Overview — Three Parallel Runways and Terminal Complex

    Google Earth satellite image of Seattle-Tacoma International Airport (Sea-Tac), showing the airport's three parallel runway system, terminal complex, concourses, and surrounding communities in SeaTac, Washington. The airport name label and Google Earth watermark are both visible in the image.
    TagsMap, Runways, Sea-Tac AirportFolderRunways
  • Future Sea-Tac Airport Expansion — Independent Runway Plans East (Runway B, 1 Mile) and West (Runway A, 4,300 ft) of 34R

    Architectural/planning drawing titled 'Future Sea/Tac Airport Expansion with an Independent Runway One Mile East of 34R,' showing Plan A layout with an independent runway 4,300 feet west of runway 34R. The drawing, credited to Don Getsick, depicts proposed runways (East Runway B, West Runway A), taxiways, satellite terminals, tramway, underground tram, off-site parking/hotel/business core, and surrounding streets including International Blvd, Des Moines Way S, and 1st Ave South, with Angle Lake and Bow Lake visible.
    CategoriesHistory TagsAirport Expansion, Airport Layout Plans, Fourth Runway, Map, Runways, Sea-Tac AirportFolderRunways
  • Detroit Metro Airport (DTW)

    Overhead aerial photograph showing a large commercial airport with multiple parallel runways, terminal complexes, and taxiway systems embedded within a flat, densely developed suburban landscape. No visible text, watermarks, or captions are present to confirm the specific airport identity, though the runway configuration and surrounding grid pattern are consistent with a major Midwestern U.S. hub airport.
    TagsAirports, Detroit, Detroit Metro Airport, DTW, RunwaysFolderDetroit
  • 2022-12-02

    Future Sea-Tac Airport Expansion — Independent Runway Plans East (Runway B, 1 Mile) and West (Runway A, 4,300 ft) of 34R

    This document presents two conceptual expansion plans for Seattle-Tacoma (Sea-Tac) Airport, showing proposed future runway configurations including an independent runway located one mile east of runway 34R (Plan A shows an alternative 4,300 feet west of 34R). The drawings detail proposed taxiways, satellite terminals, a future commuter runway, an underground tram system, and associated ground infrastructure such as off-site parking and hotel/business core areas. These plans were likely developed as part of noise and capacity planning studies to evaluate how additional independent runways could affect surrounding communities, including areas near Angle Lake, Bow Lake, and along key corridors such as International Boulevard and Des Moines Way South.
    TagsMap, RunwaysFolderRunways
  • 188th Street Overpass 16L-34R extension

    Two vehicles approach a divided tunnel entrance featuring a distinctive decorative frieze with a leaf or feather motif along the arch. A route marker sign with an upward arrow is visible, along with orange tunnel lighting extending into the passage.
    Tags188th Street, Runways, Sea-Tac AirportFolderRunways
  • Paine Field Runway Threshold View

    A ground-level view looking down an airport runway from the threshold, showing standard white runway markings including threshold stripes and a runway designation number. Airport infrastructure and aircraft are faintly visible in the far background.
    TagsAirports, Paine Field, RunwaysFolderPaine Field
  • Paine Field Runway Before Sealing

    TagsPaine Field, RunwaysFolderPaine Field

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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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