{
  "id": 317457,
  "ident": "LTFM",
  "iata_code": "IST",
  "icao_code": "LTFM",
  "gps_code": "LTFM",
  "local_code": null,
  "name": "İstanbul Airport",
  "type": "large_airport",
  "latitude_deg": 41.274874,
  "longitude_deg": 28.732136,
  "elevation_ft": 325,
  "elevation_m": 99,
  "continent": "EU",
  "iso_country": "TR",
  "country_name": "Turkey",
  "iso_region": "TR-34",
  "region_name": "İstanbul Province",
  "municipality": "Istanbul",
  "scheduled_service": true,
  "wikipedia_link": "https://en.wikipedia.org/wiki/Istanbul_Airport",
  "total_runway_count": 6,
  "active_runway_count": 6,
  "closed_runway_count": 0,
  "longest_runway_ft": 13451,
  "longest_runway_m": 4100,
  "max_runway_width_ft": 196,
  "has_lighted_runway": true,
  "has_paved_runway": true,
  "surfaces_list": "ASP, CON, CONC",
  "runways": [
    {
      "id": 329987,
      "airport_ref": 317457,
      "airport_ident": "LTFM",
      "length_ft": 13451,
      "width_ft": 147,
      "length_m": 4100,
      "width_m": 45,
      "surface": "ASP",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "17R",
      "he_ident": "35L",
      "surface_friendly": "Asphalt (ASP)"
    },
    {
      "id": 329988,
      "airport_ref": 317457,
      "airport_ident": "LTFM",
      "length_ft": 13451,
      "width_ft": 196,
      "length_m": 4100,
      "width_m": 60,
      "surface": "ASP",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "17L",
      "he_ident": "35R",
      "surface_friendly": "Asphalt (ASP)"
    },
    {
      "id": 329985,
      "airport_ref": 317457,
      "airport_ident": "LTFM",
      "length_ft": 12303,
      "width_ft": 196,
      "length_m": 3750,
      "width_m": 60,
      "surface": "ASP",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "16R",
      "he_ident": "34L",
      "surface_friendly": "Asphalt (ASP)"
    },
    {
      "id": 329986,
      "airport_ref": 317457,
      "airport_ident": "LTFM",
      "length_ft": 12303,
      "width_ft": 147,
      "length_m": 3750,
      "width_m": 45,
      "surface": "ASP",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "16L",
      "he_ident": "34R",
      "surface_friendly": "Asphalt (ASP)"
    },
    {
      "id": 336568,
      "airport_ref": 317457,
      "airport_ident": "LTFM",
      "length_ft": 10039,
      "width_ft": 148,
      "length_m": 3060,
      "width_m": 45,
      "surface": "CON",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "18",
      "he_ident": "36",
      "surface_friendly": "Concrete (CON)"
    },
    {
      "id": 610239,
      "airport_ref": 317457,
      "airport_ident": "LTFM",
      "length_ft": 9250,
      "width_ft": 148,
      "length_m": 2819,
      "width_m": 45,
      "surface": "CONC",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "09",
      "he_ident": "27",
      "surface_friendly": "Concrete (CONC)"
    }
  ],
  "nearby_constraint_matches": [
    {
      "iata_code": "SAW",
      "ident": "LTFJ",
      "icao_code": "LTFJ",
      "name": "Istanbul Sabiha Gökçen International Airport",
      "municipality": "Pendik, Istanbul",
      "country_name": "Turkey",
      "distance_nm": 34.5,
      "distance_km": 63.9,
      "longest_runway_ft": 11614,
      "longest_runway_m": 3540,
      "has_lighted_runway": true,
      "has_paved_runway": true
    },
    {
      "iata_code": "BOJ",
      "ident": "LBBG",
      "icao_code": "LBBG",
      "name": "Burgas Airport",
      "municipality": "Burgas",
      "country_name": "Bulgaria",
      "distance_nm": 94.9,
      "distance_km": 175.8,
      "longest_runway_ft": 10499,
      "longest_runway_m": 3200,
      "has_lighted_runway": true,
      "has_paved_runway": true
    }
  ],
  "rankings": {
    "published_dataset": {
      "universe_name": "RunwayFacts Published Curated Aerodromes",
      "universe_size": 650,
      "runway_rank": 38,
      "elevation_rank": 321
    },
    "global_commercial_universe": {
      "universe_name": "Qualifying Global Commercial Aerodromes (OurAirports)",
      "universe_size": 7558,
      "runway_rank": 72,
      "runway_percentile": 99.1,
      "elevation_rank": 4008,
      "elevation_percentile": 44.3
    },
    "country_commercial_universe": {
      "country_iso": "TR",
      "country_name": "Turkey",
      "published_national_rank": 1,
      "published_country_count": 8,
      "universe_national_rank": 1,
      "universe_country_count": 66
    },
    "vs_median_large_runway_pct": 34.5
  },
  "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": 1,
  "records_list_rank": 4,
  "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)"
    }
  }
}