What was found
(CAN) DURING APPROACH CREW RPTED NR 1 NP OVERSPEED, PEC NR 1 CAUTION LIGHT, POWER PLANT MESSAGE ON ED & NR 1 PROP DEICE CAUTION LIGHT CAME ON AT SAME TIME. PROP RPM RPTED AS BEING ERRATIC FOR SEVERAL MOMENTS. MDC SHOWED PROP NP OF 1095 FOR 27 SEC. 4 MORE OVER SPEEDS WERE RECORDED IN NEXT 8 SEC. FAULT CODES PRESENT WERE: LT 160 & 162, RT 156 ALL POINT TO NR 1 MPU OR PEC.INSP OF MPU MOUNTING BLOCK SHOWED LARGE BURN MARK ON FO RWARD FACE. ALSO FOUND ONE OF DEICE LEAD'S FROM SLIP RING TO PROP BLADE HAD CUT & BURN MARKS ON IT AS WELL.THE 2 BURN MARKS LINED UP & APPEAR TO HAVE BEEN PROBLEM. THEY WERE MAKING CONTACT. GAPS ON MPU T O TARGETS CHECKED & RE-RIGGED. FAULTS CLEARED.