As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, AN ELONGATED HOLE WAS DISCOVERED. REFER TO EC E18-425-01. FUSELAGE / CENTER FUSELAGE II / FLOOR STRUCTURE SILL FR42-43 & STR 17R / ELONGATED HOLE - PERMANENT REPAIR; THIS PERMANENT REPAIR IS APPROVED PER REF /2/ ETD AS CATEGORY A AND CLASSIFIED AS “MAJOR”