As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A PROPELLER INSTALLATION PROCEDURE, A CRACK WAS NOTICED ON THE FORWARD SURFACE OF THE PROPELLER REAR BARREL HALF ASSEMBLY, WHERE THE PITCH LOCK REGULATOR EXTERNALLY THREADED RING SCREWS INTO THE REAR BARREL. PRIOR TO THE PLACEMENT OF THE PITCH LOCK RATCHET RING, NOTICED A CRACK 3/4 OF AN INCH IN LENGTH, AND 1/16 OF FROM THE EDGE OF THE THREADS ON THE FLAT SURFACE AREA. OPEN