As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED PROPELLER ASSEMBLY HC-E4A-3J TO REPAIR A LEAK. THE TECHNICIAN REPORTED THAT DURING DISASSEMBLY THE DIELECTRIC FILLER AROUND THE OUTER COPPER RING HAS DETERIORATED, CRACKED OUT, & THAT THE OUTER COPPER RING WAS LIFTED OR BULGED CAUSING THE SLIP RING RUN OUT TO BE OUT OF ACCEPTABLE LIMITS.