As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
NR 3 CYLINDER ON LT ENGINE HOLD DOWN STUDS BROKE OFF ON UPPER FWD AND LOWER FWD. ONLY ONE NUT WAS TIGHT ENOUGH TO USE A WRENCH. THE OTHER NUTS WERE LOOSE. AFTER CYLINDER REMOVAL A PIECE OF THE CASE HALF CAME OFF WITH THE CYLINDER APPROX. 6 INCHES ACROSS ALONG THE TOP OF THE CYLINDER. EXHAUST PIPE FOR THE NR3 CYLINDER BROKE OFF AT THE FLANGE.