As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEFT PROP DEICE ANNUNCIATION ILLUMINATES IN NORM AND MAX INFLIGHT. AIR RETURN TO MEM. MAINTENANCE REMOVED & REPLACED LEFT PROP IAW JC 6110-303. P\N OFF R390/4-123/F27. P\N ON R389/4-123/F26. S/N ON DAP0199, S/N OFF DAP/0003/92. ALL CHECKS GOOD.