I always cringe when I see posts by people who are playing with turbines in their garage. So, whenever I come across something like this, I like to share. Case: A GECF680A2 on an AA 767. Looks like an HPT disc failure. http://www.flickr.com/photos/lafd/159079755/in/set-72157594153722446/ Disc ruptures are violent failures. It hopefully gives one an appreciation for just how much energy is contained in rotating hardware.