As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CRUISE FLIGHT AT 12K, SELECTED PROP HEAT ON AND RT AC BUSS FAULT OCCURED. INSPECTED BOTH PROP BRUSH BLOCKS, FOUND NR 2 PROP BRUSH BLOCK CONNECTOR PLUG SOAKED WITH DEICE FLUID. CLEANED AND DRIED CONNECTOR PLUG AS REQUIRED. GROUND RAN BOTH ENGINES WITH PROP HEAT ON. OPS AND LOADS CHECKED GOOD.