As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION AT CABIN FLOOR BEAM STATION 324 LP 9986885. DURING CHORD REPLACEMENT NUMEROUS ELONGATED DAMAGED HOLES WERE FOUND COMMON TO THE UPPER CHORD & VERTICAL FLOOR BEAM WEB. TRIMMED OUT DAMAGED AREA, FABRICATED & INSTALLED ALL REPAIR PARTS IAW ECRA 5310-05604 ON LP 9986885.