As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
INFLIGHT R PROP CAUTION LIGHT ILLUMINATED W/SWITCH IN NORM IN ICING CONDITIONS. FOLLOWED QRH. STILL NOT WORKING. LIGHT COMES ON WITHIN 35 SECONDS. REPLACED RT PROP DEICER LEADS ON NR 1 AND NR 3 PROP BLADES PER TASK 3060-301, P/N 660714263.