As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELONGATED NUT PLATE HOLE COMMON TO COCKPIT FLOOR ACCESS PLANE # 211AF AT LBL11 STIFFENER P/N141A5210. / STIFFENER @ STA 270 LBL 11 WAS REPLACED ON N/R G575778. NEW SCREW HOLE AND NUT PLATE WHERE LOCATED AND INSTALLED ON NEW STIFFENER PER SRM 51-40-02