As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE SCHEDULED PHASE INSPECTION. FOUND FORWARD PROP SPINNER BULKHEAD CRACKED RADIALLY OUTWARD FROM MOUNTING BOLT HOLES NEXT TO BEND RADIUS. PROPELLER MOUNTING BOLT BOLT TORQUE AND INDEXING FOUND CORRECT. SUSPECT EITHER IMPROPER HEAT TREAT DURING MFG, OR POSSIBLY TOO TIGHT OF BEND RADIUS. (K)