As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PILOT REPORTED SLIGHT ENGINE VIBRATION AND PROPELLER SLOW TO RESPOND IN RETURN TO LOW PITCH. DISASSEMBLY REVEALED ONE BLADE WAS CRACKED 180 DEGREES NEAR BEARING SURFACE AT ROOT END. CAUSE UNKNOWN. CATASTROPHIC FAILURE IMMINENT. BLADE UNDER ANALYSIS AT MCCAULEY.