{
    "callsign": "KLM51L",
    "number": "51L",
    "airline_code": "KLM",
    "airport_codes": "EHAM-LEMD",
    "_airport_codes_iata": "AMS-MAD",
    "_airports": [
        {
            "name": "Amsterdam Airport Schiphol",
            "icao": "EHAM",
            "iata": "AMS",
            "location": "Amsterdam",
            "countryiso2": "NL",
            "lat": 52.308601,
            "lon": 4.76389,
            "alt_feet": -11.0,
            "alt_meters": -3.35
        },
        {
            "name": "Madrid Barajas International Airport",
            "icao": "LEMD",
            "iata": "MAD",
            "location": "Madrid",
            "countryiso2": "ES",
            "lat": 40.4936,
            "lon": -3.56676,
            "alt_feet": 1998.0,
            "alt_meters": 608.99
        }
    ]
}