As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TRU-BOLTS (UPPER TWO) AND UPPER TWO CYLINDER HOLD-DOWN STUDS FOUND BROKEN ON NR 6 CYLINDER OF THE NR 1 ENGINE. CAUSED EXHAUST STACK TO BREAK AT FLANGE. EXHAUST GAS DAMAGED CROSS MEMBER OF ENGINE CRADLE, PROP GOVERNOR, COWLING AND IGNITION HARNESS.