As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION AT CABIN FLOORBEAM STA 324 LP 9986885. DURING CHORD REPLACEMENT NUMEROUS ELONGATED-DAMAGED HOLES WERE FOUND COMMON TO THE UPPER CHORD AND VERTICAL FLOORBEAM WEB. TRIMMED OUT DAMAGED AREA, FABRICATED AND INSTALLED ALL REPAIR PARTS PER ECRA 5310-05604 ON LP 9986885. ACCMP'D RII FOR FLOOR BEAM REPAIR REF:ECRA5310-05604.