As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING 400HR SCHEDULED INSPECTION MECHANIC FOUND NR 2 ENG FIRE SHIELD AUGMENTER FLANGE COUPLING ATTACHED TO FIREWALL CRACKED APPROXIMATELY 80% AROUND CIRCUMFERENCE. REMOVED & RE-INSTALLED ENG & PROPELLER TO FACILITATE REMOVAL & REPLACEMENT OF COUPLING WITH NEW. MOC FLIGHT SATISFACTORY AFTER MAINTENANCE COMPLETED. RE-INSPECTED AFTER MOC FLIGHT, NO DEFECTS NOTED.