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 CABIN FLOOR BEAM UPPER FLANGE AT BS 294.5 BETWEEN RBL 12 AND RBL 45 WL 208.5 WITH CORROSION OUT OF LIMITS. L = 40.00 INCHES. W = 2.00 INCHES. D = 0.074 INCH. REPAIRED THE CABIN FLOOR BEAM UPPER FLANGE AT BS 294.5 BETWEEN RBL 12 AND RBL 45 WL 208.5 IAW BOEING SRM 53-10-9 FIG 5. (X)