var requestVars:URLVariables = new URLVariables();
	requestVars.object_name = "key1";
	requestVars.cache = new Date().getTime();

var request:URLRequest = new URLRequest();
	request.url = "http://localhost:3000/videos/find_path/";
	request.method = URLRequestMethod.GET;
	request.data = requestVars;
	
	for (var prop:String in requestVars) {
		trace("Sent " + prop + " as: " + requestVars[prop]);
	}

var loader:URLLoader = new URLLoader();
	loader.dataFormat = URLLoaderDataFormat.TEXT;
	loader.addEventListener(Event.COMPLETE, loaderCompleteHandler);
    loader.addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler);
    loader.addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);
    loader.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);

try
{
	loader.load(request);
}
catch (error:Error)
{
	trace("Unable to load URL");
}

function loaderCompleteHandler(e:Event):void
{
	 var variables:URLVariables = new URLVariables( e.target.data );
	if(variables.success)
	{
		trace(variables.path);		
	}
}
function httpStatusHandler (e:Event):void
{
	//trace("httpStatusHandler:" + e);
}
function securityErrorHandler (e:Event):void
{
	trace("securityErrorHandler:" + e);
}
function ioErrorHandler(e:Event):void
{
	trace("ioErrorHandler: " + e);
}

var requestVars:URLVariables = new URLVariables();
	requestVars.object_name = "key1";
	requestVars.cache = new Date().getTime();

var request:URLRequest = new URLRequest();
	request.url = "http://localhost:3000/videos/find_path/";
	request.method = URLRequestMethod.GET;
	request.data = requestVars;
	
	for (var prop:String in requestVars) {
		trace("Sent " + prop + " as: " + requestVars[prop]);
	}

var loader:URLLoader = new URLLoader();
	loader.dataFormat = URLLoaderDataFormat.TEXT;
	loader.addEventListener(Event.COMPLETE, loaderCompleteHandler);

try
{
	loader.load(request);
}
catch (error:Error)
{
	trace("Unable to load URL");
}

function loaderCompleteHandler(e:Event):void
{
	 var variables:URLVariables = new URLVariables( e.target.data );
	if(variables.success)
	{
		trace(variables.path);		
	}
}

I needed a way to do a Database lookup using GET.  This simple example sends a GET requests and shows how to collect a response that would look like this "success=true&path=xyz.flv"

AS3: Sending and Recieving Data using a GET Request

ActionScript 3