isn't this the one the determined had been fueled with Jet-A instead of 100LL... apparently the FBO had also fueled a 421 at the same time with Jet-A, however it was caught prior to takeoff... I got this second hand so perhaps it is not correct?

 

I don't know about the plane being misfueled, but this comment reminds me of something I read a while back.  The pilot of a Turbo-Skylane was refueling while on a cross country trip and noticed the line guy was about to pump Jet-A into his plane.  When the pilot stopped him from pumping the Jet-A the line guy, with a confused look on his face, said, "But it says Turbo on the side.  Don't all these Turbos use Jet-A?"  A good reminder that just because someone works around airplanes doesn't mean they know much about them.  Keep a close eye on the fuel truck.  And having the word "Turbo" prominently displayed on an airplane is not necessarily a good thing.

 

Tom Gourley