As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A MAINTENANCE VISIT FOUND BORESCOPE PLUGS NOT INSTALLED ON NR 4 ENGINE AT 12:30, 10:00 AND 9:00 POSITIONS, DAMAGE EXCEEDED LIMITATIONS IAW DC-8 SRM. INSTALLED AND SAFETIED BORESCOPES PLUGS ON NR 4 ENGINE IAW DFM 56 AND MM 72-42-00.