As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN FOR SI CHECK, MAINTENANCE FOUND CORROSION ON FLOOR BEAM AT STA 420 RBL 45-65, WL 208 LOWER SIDE OF UPPER CHORD. MAINTENANCE REMOVED THE CORROSION, FOUND TO BE OUT OF LIMITS PER SRM 53-10-1. MAINTENANCE REPAIRED IAW UPS EO B727-5310-7455A.