Yep recently had a mate in an EMB120 have a FCU go on them - Tq fluctuations and then shutdown, not sure on the specifics regarding the FCU. One morning at 6am I had a PT6-27 let go with an almighty bang - FOD they said?? That sure woke me up in a hurry at 300ft after take off - and I thought it was pistons that had the greater % of failures!!