URLRequest GET with requestHeaders

Is there a way to make a GET URLRequest with custom requestHeaders in AIR? In the Flash Player this is not allowed, per the documentation:

Due to browser limitations, custom HTTP request headers are only supported for POST requests, not for GET requests.

However, AIR is not the browser, so it shouldn;t be subject to these limitations, but it seems to still strip out all my requestHeaders when using the GET method, while they work fine with POST. Is there a way to make it work?

Thanks!

- Aaron