As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CRACK IN PROPELLER HUB WAS FOUND DURING AN INSPECTION TO FIND A REASON FOR A GREASE LEAK COMING OUT OF THE PROP SPINNER. THE REAR HUB HALF WAS FOUND TO BE BROKEN IN TWO AROUND ONE BLADE SOCKET. ANY FURTHER OPERATION WOULD HAVE CAUSED A COMPLETE BLADE SEPARATION. HUB WAS SENT TO MFG. FOR FURTHER EVALUATION.