# REPLY_TO_AVIONICS_ROUTE_REQUEST<no value>
Replies to a request from the EFB for instruments to send their current route. Instrument which are responsible for a flight plan route should call this when they receive an [`AvionicsRouteRequested`](../coherent-events/avionicsrouterequested/) event from the listener, if they wish to synchronize their flight plan to the EFB.

Only one instrument should respond to a route request, generally whichever cockpit instrument is responsible for holding the flight plan route. If multiple instruments could conceivably respond, they should be architected in such a way that it they can be configured by the developer to nominate only one instrument for responses.

Unexpected behavior can occur if more than one instrument responds to a request.


##### Example

In the following example, the variable `route` is a `FlightPlanRoute` created elsewhere, and the value 7 is the ID received in the [`AvionicsRouteRequested`](../coherent-events/avionicsrouterequested/) event.

``` js
await Coherent.call('REPLY_TO_AVIONICS_ROUTE_REQUEST', route, 7);
```


##### Parameters


{{< table-wrapper >}}

| Parameter   | Description                                       | Type                                                                                  |
|-------------|---------------------------------------------------|---------------------------------------------------------------------------------------|
| `route`     | The route to reply to the EFB with.               | [FlightPlanRoute](../coherent-listeners/js-listener-plannedroute/#FlightPlanRoute) |
| `requestId` | The ID of the request that is being responded to. | Integer                                                                               |

{{< /table-wrapper >}}


##### Return Values

N/A