As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING FLIGHT, THE CREW RECEIVED A LT PROPELLER HEAT FAIL BOTH MODES AND RETURNED TO PIT. MAINTENANCE CLEANED SLIP RING AND TIGHTENED TERMINAL ENDS ON BRUSH BLOCK IN ACCORDANCE WITH DORNER MAINTENANCE MANUAL 30-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.