As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE. FOUND DELAMINATION ON FLOOR PANEL 221LF FROM FR 12 TO FR 16 AND Y 0 TO Y -512.5 WITH DELAMINATION AREA MEASURING L=12.84 INCHES W=9.50 INCHES. REPLACED FLOOR PANEL, REF A321 SRM 53-02-00-300-011 AND IRM 9701 REV I.