As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING GROUND RUN FOLLOWING COMPLETION OF ANNUAL INSP AND CHECK OF GENERATOR BEING INOPERATIVE. A VIB. WAS NOTED WITH THE ENGINE SHUTDOWN. INSP OF THE ACFT SHOWED A HOLE IN THE AFT COWLING TO THE RT SIDE OF THE OIL COOLER. THE DAMAGE CONTINUED THROUGH 2 BULKHEADS AND OFF THE ENGINE RPM COMP AND REFERENCE FLEX LINE DAMAGING THESE COMPONENTS. ADDITIONAL INSP SHOWED A MISSING STATIC WEIGHT ON ONE OF THE TAIL ROTOR BLADES.