As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROPELLER'S METAL TIPPING BECAME LOOSE AND SEPARATED FROM PROPELLER IN-FLIGHT. THE SEPARATION WAS DUE TO WOOD DETERIORATION. SUBMITTER RECOMMENDATION: INSPECT PROPELLER FOR DETERIORATION OF WOOD AND METAL TIPPING OR METAL TIPPING RIVETS FOR LOOSENESS. INDICATION: DARK STREAKS ALONG PROPELLER DARK LINES ALONG EDGE OF METAL TIPPING.