# fsChartsGetIndex<no value>
The `fsChartsGetIndex` function fetches the chart index for a given airport from the specified provider (LIDO or FAA).

 

##### Syntax

``` wasm
bool fsChartsGetIndex(
    FsIcao airportIcao,
    const char* provider,
    FsChartsIndexCallback callback,
    void* userData
    );
```

 

##### Members

{{< table-wrapper >}}

| Parameters    | Description                                                                                                 |
|---------------|-------------------------------------------------------------------------------------------------------------|
| `airportIcao` | The {{< glossterm >}}icao{{< /glossterm >}} of the airport to get the chart index for.                       |
| `provider`    | The chart provider to fetch the data for, should be either `LIDO` or `FAA`.                                 |
| `callback`    | The callback invoked when the request completes.                                                            |
| `userData`    | A user-defined pointer for data that is to be returned as part of the callback (or `NULL` if not required). |

{{< /table-wrapper >}}


 

##### Return Values

The function returns `false` if it was not possible to send the request. If the request was sent but failed, the specified callback will be invoked with an appropriate error code.

 

##### Remarks

N/A