As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PROPELLER RE-INSTALLATION AFTER AND ENGINE CHANGE. A 2" CRACK WAS VISUALLY NOTED FORWARD SURFACE OF THE PROPELLER HUB (BARREL HALF). THE RII INSPECTOR NOTED THE CRACK. AFTER DISASSEMBLING OF THE PROPELLER IT WAS NOTED THE FIRST THREAD OF THE HUB HAD THE CRACK.