The one time that i could have seen a blown turbo GE, it blew its turbo right when it went out of sight. I was at Austin (Texas) Amtrak Station, rail fanning, and its turbo blew right past the S-curve. I heard about it on the scanner. Apparently they had to set it out, as it must have gotten out of control or something. Naturally, it was a Union Pacific C40-8, in shiny new paint.