ATR is indeed a reliable bird. A friend of mine had to shut an engine down due to low oil pressure. Turned out a mechanic neglected to put the oil cap back on after servicing. It all drains out after about 30 minutes! Another guy flamed out due to pilot induced fuel starvation. (Cocked up the dripsticks /fueling graph with a fuel gauge on MEL). We had one engine fire, but I cannot recall any actual mechanical failures the entire time my old carrier was flying them from 1996 to about 2002.