{
  "id": 3602,
  "ident": "KIAD",
  "iata_code": "IAD",
  "icao_code": "KIAD",
  "gps_code": "KIAD",
  "local_code": "IAD",
  "name": "Washington Dulles International Airport",
  "type": "large_airport",
  "latitude_deg": 38.9445,
  "longitude_deg": -77.455803,
  "elevation_ft": 312,
  "elevation_m": 95,
  "continent": "NA",
  "iso_country": "US",
  "country_name": "United States",
  "iso_region": "US-VA",
  "region_name": "Virginia",
  "municipality": "Dulles",
  "scheduled_service": true,
  "wikipedia_link": "https://en.wikipedia.org/wiki/Washington_Dulles_International_Airport",
  "total_runway_count": 4,
  "active_runway_count": 4,
  "closed_runway_count": 0,
  "longest_runway_ft": 11500,
  "longest_runway_m": 3505,
  "max_runway_width_ft": 150,
  "has_lighted_runway": true,
  "has_paved_runway": true,
  "surfaces_list": "CON, CONC-G",
  "runways": [
    {
      "id": 243967,
      "airport_ref": 3602,
      "airport_ident": "KIAD",
      "length_ft": 11500,
      "width_ft": 150,
      "length_m": 3505,
      "width_m": 46,
      "surface": "CON",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "01R",
      "he_ident": "19L",
      "surface_friendly": "Concrete (CON)"
    },
    {
      "id": 250849,
      "airport_ref": 3602,
      "airport_ident": "KIAD",
      "length_ft": 11500,
      "width_ft": 150,
      "length_m": 3505,
      "width_m": 46,
      "surface": "CONC-G",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "01C",
      "he_ident": "19C",
      "surface_friendly": "CONC-G"
    },
    {
      "id": 243969,
      "airport_ref": 3602,
      "airport_ident": "KIAD",
      "length_ft": 10501,
      "width_ft": 150,
      "length_m": 3201,
      "width_m": 46,
      "surface": "CON",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "12",
      "he_ident": "30",
      "surface_friendly": "Concrete (CON)"
    },
    {
      "id": 243968,
      "airport_ref": 3602,
      "airport_ident": "KIAD",
      "length_ft": 9400,
      "width_ft": 150,
      "length_m": 2865,
      "width_m": 46,
      "surface": "CON",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "01L",
      "he_ident": "19R",
      "surface_friendly": "Concrete (CON)"
    }
  ],
  "nearby_constraint_matches": [
    {
      "iata_code": "BWI",
      "ident": "KBWI",
      "icao_code": "KBWI",
      "name": "Baltimore/Washington International Thurgood Marshall Airport",
      "municipality": "Baltimore",
      "country_name": "United States",
      "distance_nm": 39.2,
      "distance_km": 72.6,
      "longest_runway_ft": 10503,
      "longest_runway_m": 3201,
      "has_lighted_runway": true,
      "has_paved_runway": true
    }
  ],
  "rankings": {
    "published_dataset": {
      "universe_name": "RunwayFacts Published Curated Aerodromes",
      "universe_size": 650,
      "runway_rank": 256,
      "elevation_rank": 331
    },
    "global_commercial_universe": {
      "universe_name": "Qualifying Global Commercial Aerodromes (OurAirports)",
      "universe_size": 7558,
      "runway_rank": 429,
      "runway_percentile": 94.3,
      "elevation_rank": 4054,
      "elevation_percentile": 43.8
    },
    "country_commercial_universe": {
      "country_iso": "US",
      "country_name": "United States",
      "published_national_rank": 27,
      "published_country_count": 62,
      "universe_national_rank": 93,
      "universe_country_count": 2020
    },
    "vs_median_large_runway_pct": 15.0
  },
  "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": 26,
  "records_list_rank": 33,
  "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)"
    }
  }
}