As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA FLIGHT NR 2345, PROP DE-ICE CAUTION LIGHT ILLUMINATED. RAN ONE (1) CYCLE IN FLIGHT PER CHECKLIST. RT PROP DEICE ADVISORY LIGHT ONLY CAME ON. NO ELEC LOADS NOTED ON ANY PHASE A/C. MAINTENANCE TROUBLE SHOT. FOUND NR 1 ENGINE BRUSE BLOCK GAP DISTANCE TO BE OUT OF LIMITS AND BRUSHES WORN ON ONE SIDE. REPLACED NR 1 ENGINE PROP BRUSH BLOCK PER AMM 30-61-14, PAGE 401-407. OPS CHECK GOOD. NO FURTHER DEFECTS NOTED. AIRCRAFT RETURNED TO SERVICE.