As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THREE FLOORBOARD ATTACHMENT HOLES WERE FOUND ELONGATED ON THE AFT SIDE OF THE UPPER CHORD OF THE STATION 347 FLOOR BEAM. THE 0.25€? HOLES WERE OVERSIZED TO 0.4032€? TO REMOVE THE ELONGATION. A FREEZE PLUG WAS INSTALLED AT EACH OF THE THREE HOLES PER THE SRM. ACCOMPLISHED REPAIR PER EA 767-53-016561.