As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE 561.58 SMOH, NR 5 INTAKE VALVE, CRACK IN STEM .1875 INCH FROM TOP END. COMPLETELY AROUND. TELEDYNE TECH REP SAID IT WAS NORMAL. STELLITE TIP WELDED INTO STEM. OTHER VALVES IN ENGINE SHOW SIGNS OF CRACK STARTING. CLYINDERS WERE FACTORY NEW AT OVERHAUL.