{
    "callsign": "OKA3175",
    "number": "3175",
    "airline_code": "OKA",
    "airport_codes": "ZBTJ-ZSPD",
    "_airport_codes_iata": "TSN-PVG",
    "_airports": [
        {
            "name": "Tianjin Binhai International Airport",
            "icao": "ZBTJ",
            "iata": "TSN",
            "location": "Tianjin",
            "countryiso2": "CN",
            "lat": 39.124401,
            "lon": 117.346001,
            "alt_feet": 10.0,
            "alt_meters": 3.05
        },
        {
            "name": "Shanghai Pudong International Airport",
            "icao": "ZSPD",
            "iata": "PVG",
            "location": "Shanghai",
            "countryiso2": "CN",
            "lat": 31.1434,
            "lon": 121.805,
            "alt_feet": 13.0,
            "alt_meters": 3.96
        }
    ]
}