As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
A DENT WAS FOUND ON THE NR 4 ENG LT EXHAUST SLEEVE, AT THE 9 O'CLOCK LOCATION NEAR NAC STA 349-236. MANUFACTURER PROVIDED INSPECTION TIMELINE OF REF/D/AND PERFORM FPI INSPECTION PER BAC 5423 TO ENSURE NO CRACKS ARE PRESENT ON NOTED DENT. REPEAT INSPECTION EVERY 1300 FLIGHT HOURS PER EO4470A118 PART 2 UNTIL NEXT "C" CHECK.