Externally hosting secondary swf files (iOS)

example1.as

package
{
    import flash.display.Loader;
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.IOErrorEvent;
    import flash.net.URLRequest;
    import flash.system.ApplicationDomain;
    import flash.system.LoaderContext;
  
    public class SampleMainSwf extends Sprite
    {
        private var externalLoader:Loader;
        private var url:String= "http://www.xyz.com/Level1.swf";
        private var urlRequest:URLRequest = new URLRequest(url);
        private var ldrContext:LoaderContext;
  
        public function SampleMainSwf()
        {
            externalLoader = new Loader();
            externalLoader.contentLoaderInfo.addEventListener(Event.COMPLETE,completeHandler);
            externalLoader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR,errorHandler);
            ldrContext=new LoaderContext(false,ApplicationDomain.currentDomain,null);
  
            try
            {
                externalLoader.load(urlRequest, ldrContext);
            }
            catch(e:Error)
            {
                trace("Error ID : "+e.errorID+"\nError Message : "+e.message);
            }
        }
  
        private function completeHandler(e:Event):void
        {
            addChild(externalLoader);
        }
  
        private function errorHandler(e:IOErrorEvent):void
        {
            trace("In IO ErrorEvent Handler");
        }
  
    }
}

http://helpx.adobe.com/en/flash-player/release-note/fp_117_air_37_release_notes.html