As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND ELONGATED HOLE AFTER REMOVING FLOOR BEAM CAP RBL 27.00 BETWEEN FS 559.00+32 AND FS 559.00+48 IN THE U CHANNEL. C-CHECK RO 10/1/2020. REMOVED FLOOR BEAM U CHANNEL FROM RBL 27 AT FS 559+10 AND INSTALLED NEW SERVICEABLE U CHANNEL, IAW MHI SNIEO. COMPLETED TASK CARD AND ATTACHED COMPLETED FORM 337. NO WEIGHT CHANGE.