ActionScript 2.0 :: Handling URL Loader Error Event

There is a file (php script) stored remotely on the server and I want to read it into flash using AS3.0's URLLoader. However, if I unplug my cable just before reading the file, and attempt to read the file, I want to capture an Error event in some error handler, which would mean "internet connection is down, file can not be accessed". I am reading the AS3.0 documentation now for 2 hours already (mainly: "Handling asynchronous errors in an application" and "Events of URLLoader class"), but I didn't stumble across an example of how to catch an Error event of the URLLoader object when reading a remote file from the server. However I took all possible events I could find (even those which are not necessary at all), and tested them in the following code:

Code:
public function URLLoaderTest( ) {
_loader = new URLLoader( ); // _loader is private var of this class
configureListeners(_loader);
var request:URLRequest = new URLRequest("url_with_php_script");
_loader.load(request);
[Code] .....

This code traces tons of data, when executed with internet connection up:
Code:
openHandler: [Event type="open" bubbles=false cancelable=false eventPhase=2]
progressHandler loaded:10 total: 30
httpStatusHandler: [HTTPStatusEvent type="httpStatus" bubbles=false cancelable=false eventPhase=2 status=0]
completeHandler data: 1165428133
but it traces NOTHING (?!),

If the connection is down (whether closed by firewall, or cable-unplugged). So that basically means, none of the above events is fired, none of them takes care of the errorHandling in case of no-internet-connection (or if for some reason we can't reach the server atm). Any ErrorEvent i can use to catch such (connection down) Error Event? Or do I have to use Timer class instead to check wether the server responded in some time or not? I would like to leave this as the last option.