As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROXIMATELY 12 MINUTES AFTER TAKEOFF, THE RT ENG FIRE WARNING & WING OVERHEAT LIGHTS ILLUMINATED. PILOT PERFORMED EMER STOP FEATHER & FIRED THE FIRE EXTINGUISHER; THE WARNINGS EXTINGUISHED IMMEDIATELY. RETURNED & LANDED WITHOUT INCIDENT. POST LANDING INSPECTION REVEALED NO FIRE DAMAGE TO THE ENG OR ENG COMPARTMENT. MX PERSONNEL WERE DISPATCHED. DURING ENG RUNS A 2.5 INCH CRACK IN THE EXHAUST DUCT BETWEEN TWO EGT PROBE BOSSES WAS DISCOVERED.