What was found
(CAN) DURING OVERHAUL OF REF. STARTER-GEN, DAMAGE TO ACCESS COVER & ONE BRUSH'S SHUNT WIRES FOUND. THIS DAMAGE CONSISTED OF BURNING MARKS ON COVER & BURNT &MELTED STRANDS OF BRAIDED SHUNT WIRES ON BRUSH. APPROX. 1/4 OF TOTAL BRUSH SHYNT WIRES WERE BURNT THROUGH. CAUSE OF THIS IS INCORRECT INST OF COVER ON STARTER-GEN. JOINING BRACKETS OF COVER WERE LOCATED OVER #1 BRUSH, INSTEAD OF OVER A SUPPORT RIB OF BEARING SUPPORT ASSY.THIS ALLOWED BRUSH SHUNT WIRES TO TOUCH COVER & SHORT TO GROUND. CONTINUED OP IN A SHORTED CONDITION CO ULD RESULT IN BRUSH SHUNTS BURNING THROUGH & CAUSING GEN FAILURE: BECAUSE PC-12 IS A SINGLE ENGINE IFR A/C, THE