{
    "callsign": "FRG3",
    "number": "3",
    "airline_code": "FRG",
    "airport_codes": "KMKE-KSBM-KMKE",
    "_airport_codes_iata": "MKE-KSBM-MKE",
    "_airports": [
        {
            "name": "General Mitchell International Airport",
            "icao": "KMKE",
            "iata": "MKE",
            "location": "Milwaukee",
            "countryiso2": "US",
            "lat": 42.947201,
            "lon": -87.896599,
            "alt_feet": 723.0,
            "alt_meters": 220.37
        },
        {
            "name": "Sheboygan County Memorial Airport",
            "icao": "KSBM",
            "iata": "",
            "location": "Sheboygan",
            "countryiso2": "US",
            "lat": 43.7696,
            "lon": -87.851402,
            "alt_feet": 755.0,
            "alt_meters": 230.12
        },
        {
            "name": "General Mitchell International Airport",
            "icao": "KMKE",
            "iata": "MKE",
            "location": "Milwaukee",
            "countryiso2": "US",
            "lat": 42.947201,
            "lon": -87.896599,
            "alt_feet": 723.0,
            "alt_meters": 220.37
        }
    ]
}