As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCHEDULED MAINTENANCE EVENT, MAINTENANCE REPORTED THE FLOOR BOARDS NEAR THE ENTRANCE WAY WERE SPONGY. UPON FURTHER INSPECTION, FRAME 10 WAS FOUND CRACKED. THE CRACK WAS APPROXIMATELY 1 INCH LONG AND BEGAN AT THE FORWARD NUTPLATE AND EXTENDED FROM LT TO RT. MAINTENANCE PERFORMED THE STANDARD REPAIR IAW THE SRM.