As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PROPELLER WAS REMOVED AND SENT TO PIEDMONT AVIATION COMPONENT SEVICES (REPAIR STATION QWPR503X)FOR VIBRATION /MCCAULEY ALERT SERVICE BULLETIN 246. DURING DISASSEMBLY FOUND OIL IN NR 4 BLADE BORE DUE TO NICK IN PLUG SEAL, LEADING TO BELIEVE THE CAUSE OF VIBRATION. UPON FLUORESCENT PENETRANT INSPECTION FOUND NR 2 BLADE P/N 114HCA-0, S/N NC033 (T.S.N. 15,090.86; T.S.O. 622.15) WITH AN INDICATION PER MCCAULEY ASB 246B/REV 2.