As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON BETWEEN FASTENER HEADS ON LT WING TOP SKIN PANEL UPR SURFACE AT RIB 19 +2 ON FRONT SPAR; PERMANENT REPAIR PERFORMED IAW LTPR EO-A32F-57-4656099. CORROSION REWORKED PER SRM TASK. 57-21-11-283-014 REV 122 WORK ACCOMPLISHED ON LHT NT 5000761256-0010