As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING M-CHECK FOUND MAIN PASSENGER CABIN STA 160, LBL 55 FLOOR PANEL SUPPORT HAS A DOUBLE DRILLED HOLE. REMOVED CLOSEOUT PANEL AND FLOOR SUPPORT IAW SRM 51-30-02 AND 51-30-05. FABRICATED NEW SUPPORT IAW SRM 51-10-2 AND 51-10-4. INSTALLED NEW FLOOR SUPPORT AND CLOSEOUT PANEL IAW SRM 51-30-02 AND 51-30-05.