As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SJO - DURING Q-CHECK, FOUND THE PASSENGER CABIN FLOOR ANGLE AT BS 286.5 BETWEEN LBL 11.5 AND LBL 41 WL 208.5 WITH CORROSION OUT OF LIMITS. L = 4.00 INCHES. W = 0.50 INCH. D = 0.040 INCH. REPLACED THE PASSENGER CABIN FLOOR ANGLE AT BS 286.5 BETWEEN LBL 11.5 AND LBL 41 WL 208.5 IAW BOEING SRM 51-10-1 PAGE 8. (X)