As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MFR - PROP DEICE CAUTION ILLUMINATED INFLIGHT. PERFORMED CHECKLISH. RESET PROP DEICE CONTROL. CAUTION RE-ILLUMINATED. LANDED IN SEA WITHOUT INCIDENT. MAINTENANCE REPLACED NR 2 TMCU. CALIBRATION AND OPERATIONAL TEST GOOD. AIRCRAFT RETURNED TO SERVICE.