Is there a twitter app or iPhone app that helps you track flight status in realtime?

I’m pretty sure I’ve seen something like this somewhere (I have a feeling it was web-based and only for a particular airline though). There are certainly status tracking web-apps for public transport in some places (e.g. I’ve seen one for the London underground). I was looking into the situation in Ireland recently, and there is no way that I could find to get access to this information (if you know of any, I’d love to hear it!). I’d be curious to see how available it is for airlines….

Taken from the TwitEye Ideas Stream.