As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(AUS) ENGINE CYLINDERS (4OFF) SEVERELY ERODED ON EXHAUST FLANGES. GASKETS LEAKING AND CAUSING BLOW-BY. ENGINE, ENGINE COMPONENTS AND FIREWALL CORRODED DUE TO EXHAUST GAS CONTAMINATION. AIRCRAFT HAD COMPLETED 20.7 HOURS SINCE LAST PERIODIC INSPECTION.