{
  "id": 41624,
  "ident": "OPST",
  "iata_code": "SKT",
  "icao_code": "OPST",
  "gps_code": "OPST",
  "local_code": null,
  "name": "Sialkot International Airport",
  "type": "large_airport",
  "latitude_deg": 32.535941,
  "longitude_deg": 74.364623,
  "elevation_ft": 837,
  "elevation_m": 255,
  "continent": "AS",
  "iso_country": "PK",
  "country_name": "Pakistan",
  "iso_region": "PK-PB",
  "region_name": "Punjab",
  "municipality": "Sialkot",
  "scheduled_service": true,
  "wikipedia_link": "https://en.wikipedia.org/wiki/Sialkot_International_Airport",
  "total_runway_count": 1,
  "active_runway_count": 1,
  "closed_runway_count": 0,
  "longest_runway_ft": 11811,
  "longest_runway_m": 3600,
  "max_runway_width_ft": 150,
  "has_lighted_runway": true,
  "has_paved_runway": true,
  "surfaces_list": "ASP",
  "runways": [
    {
      "id": 307350,
      "airport_ref": 41624,
      "airport_ident": "OPST",
      "length_ft": 11811,
      "width_ft": 150,
      "length_m": 3600,
      "width_m": 46,
      "surface": "ASP",
      "is_lighted": true,
      "is_closed": false,
      "le_ident": "22L",
      "he_ident": "04R",
      "surface_friendly": "Asphalt (ASP)"
    }
  ],
  "nearby_constraint_matches": [
    {
      "iata_code": "ATQ",
      "ident": "VIAR",
      "icao_code": "VIAR",
      "name": "Sri Guru Ram Das Ji International Airport",
      "municipality": "Amritsar",
      "country_name": "India",
      "distance_nm": 54.3,
      "distance_km": 100.6,
      "longest_runway_ft": 12000,
      "longest_runway_m": 3658,
      "has_lighted_runway": true,
      "has_paved_runway": true
    },
    {
      "iata_code": "LHE",
      "ident": "OPLA",
      "icao_code": "OPLA",
      "name": "Allama Iqbal International Airport",
      "municipality": "Lahore",
      "country_name": "Pakistan",
      "distance_nm": 60.9,
      "distance_km": 112.8,
      "longest_runway_ft": 11024,
      "longest_runway_m": 3360,
      "has_lighted_runway": true,
      "has_paved_runway": true
    },
    {
      "iata_code": "SXR",
      "ident": "VISR",
      "icao_code": "VISR",
      "name": "Srinagar International Airport",
      "municipality": "Srinagar",
      "country_name": "India",
      "distance_nm": 89.5,
      "distance_km": 165.8,
      "longest_runway_ft": 12090,
      "longest_runway_m": 3685,
      "has_lighted_runway": true,
      "has_paved_runway": true
    },
    {
      "iata_code": "ISB",
      "ident": "OPIS",
      "icao_code": "OPIS",
      "name": "Islamabad International Airport",
      "municipality": "Attock",
      "country_name": "Pakistan",
      "distance_nm": 98.5,
      "distance_km": 182.4,
      "longest_runway_ft": 12001,
      "longest_runway_m": 3658,
      "has_lighted_runway": true,
      "has_paved_runway": true
    }
  ],
  "rankings": {
    "published_dataset": {
      "universe_name": "RunwayFacts Published Curated Aerodromes",
      "universe_size": 650,
      "runway_rank": 229,
      "elevation_rank": 214
    },
    "global_commercial_universe": {
      "universe_name": "Qualifying Global Commercial Aerodromes (OurAirports)",
      "universe_size": 7558,
      "runway_rank": 371,
      "runway_percentile": 94.8,
      "elevation_rank": 2626,
      "elevation_percentile": 62.7
    },
    "country_commercial_universe": {
      "country_iso": "PK",
      "country_name": "Pakistan",
      "published_national_rank": 6,
      "published_country_count": 8,
      "universe_national_rank": 6,
      "universe_country_count": 44
    },
    "vs_median_large_runway_pct": 18.1
  },
  "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": 6,
  "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)"
    }
  }
}