As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER COMPLAINCE WITH TELEDYNE CONTINENTAL SB CSB-95-4 REGARDING IMPROPERLY INSTALLED INTAKE VALVE GUIDE SEALS, FOUND 2 OF 6 DEFECTIVE SEALS ON ENGINE NOTED. TWO FWD CYLINDERS NR 5 AND NR 6 HAD BROKEN SEALS. REMOVED AND REPLACED ALL INTAKE VALVE GUIDE SEALS ON THIS ENGINE IAW TELEDYNE CONTINENTAL SB CSB-95-4. SUBMITTER RECOMMENDS ALL SEALS IN QUESTION INSPECTED IAW THIS SB, BE REPLACED FOR ASSURANCE.