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 CHANNEL FROM BS 302 - BS 305.5 BETWEEN LBL 36 AND LBL 47 WITH CORROSION OUT OF LIMITS. L = 2.00 INCHES. W = 1.00 INCH. D = 0.025 INCH. REPLACED THE CABIN FLOOR CHANNEL FROM BS 302 - BS 305.5 BETWEEN LBL 36 AND LBL 47 IAW BOEING SRM 53-10-1 FIG 8 AND 5130-2. (X)