{
  "id": 3875,
  "ident": "KSEA",
  "iata_code": "SEA",
  "icao_code": "KSEA",
  "gps_code": "KSEA",
  "local_code": "SEA",
  "name": "Seattle–Tacoma International Airport",
  "type": "large_airport",
  "latitude_deg": 47.447943,
  "longitude_deg": -122.310276,
  "elevation_ft": 433,
  "elevation_m": 132,
  "continent": "NA",
  "iso_country": "US",
  "country_name": "United States",
  "iso_region": "US-WA",
  "region_name": "Washington",
  "municipality": "Seattle",
  "scheduled_service": true,
  "wikipedia_link": "https://en.wikipedia.org/wiki/Seattle%E2%80%93Tacoma_International_Airport",
  "total_runway_count": 4,
  "active_runway_count": 3,
  "closed_runway_count": 1,
  "longest_runway_ft": 11901,
  "longest_runway_m": 3627,
  "max_runway_width_ft": 150,
  "has_lighted_runway": true,
  "has_paved_runway": true,
  "surfaces_list": "PEM, Unknown",
  "runways": [
    {
      "id": 242182,
      "airport_ref": 3875,
      "airport_ident": "KSEA",
      "length_ft": 11901,
      "width_ft": 150,
      "length_m": 3627,
      "width_m": 46,
      "surface": "PEM",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "16L",
      "he_ident": "34R",
      "surface_friendly": "Permanent Paved (PEM)"
    },
    {
      "id": 254330,
      "airport_ref": 3875,
      "airport_ident": "KSEA",
      "length_ft": 9426,
      "width_ft": 150,
      "length_m": 2873,
      "width_m": 46,
      "surface": "PEM",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "16C",
      "he_ident": "34C",
      "surface_friendly": "Permanent Paved (PEM)"
    },
    {
      "id": 242181,
      "airport_ref": 3875,
      "airport_ident": "KSEA",
      "length_ft": 8500,
      "width_ft": 150,
      "length_m": 2591,
      "width_m": 46,
      "surface": "PEM",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "16R",
      "he_ident": "34L",
      "surface_friendly": "Permanent Paved (PEM)"
    },
    {
      "id": 302282,
      "airport_ref": 3875,
      "airport_ident": "KSEA",
      "length_ft": null,
      "width_ft": null,
      "length_m": null,
      "width_m": null,
      "surface": "Unknown",
      "is_lighted": true,
      "is_closed": true,
      "le_ident": "lower",
      "he_ident": "high",
      "surface_friendly": "Unknown"
    }
  ],
  "nearby_constraint_matches": [],
  "rankings": {
    "published_dataset": {
      "universe_name": "RunwayFacts Published Curated Aerodromes",
      "universe_size": 650,
      "runway_rank": 209,
      "elevation_rank": 290
    },
    "global_commercial_universe": {
      "universe_name": "Qualifying Global Commercial Aerodromes (OurAirports)",
      "universe_size": 7558,
      "runway_rank": 333,
      "runway_percentile": 95.6,
      "elevation_rank": 3650,
      "elevation_percentile": 49.1
    },
    "country_commercial_universe": {
      "country_iso": "US",
      "country_name": "United States",
      "published_national_rank": 24,
      "published_country_count": 63,
      "universe_national_rank": 76,
      "universe_country_count": 2020
    },
    "vs_median_large_runway_pct": 19.0
  },
  "provenance": {
    "source_dataset": "OurAirports Open Aviation Database",
    "source_license": "Public Domain (CC0)",
    "data_snapshot_version": "2026-09-01",
    "dataset_integrity": "Cryptographic SHA-256 Checksum Verified & Fail-Closed Schema Inspected",
    "source_verification": "Source-reported aviation registry records; statistical percentiles derived by RunwayFacts",
    "distance_calculation_method": "Haversine Great-Circle Formula (Earth R = 3440.065 NM)",
    "last_verified_at": "2026-09-01"
  },
  "published_national_rank": 24,
  "schema_metadata": {
    "ranking_universe_definitions": {
      "published_dataset": {
        "id": "runwayfacts-published-v1",
        "size": 650,
        "description": "Curated primary commercial aerodromes published on RunwayFacts meeting minimum 3,000 ft paved criteria and IATA code assignment."
      },
      "global_commercial_universe": {
        "id": "ourairports-commercial-universe-20260901",
        "size": 7558,
        "description": "All international aviation facilities in OurAirports meeting commercial aerodrome criteria with active runways."
      }
    },
    "spatial_relation_definition": {
      "max_distance_nm": 100,
      "min_runway_length_ft": 5000,
      "surface_filter": "paved_only",
      "formula": "Haversine Geodesic (Earth R = 3440.065 NM)"
    }
  }
}