What was found
SEA - DURING SI CHECK, FOUND MAIN CABIN FLOORBEAM, BS 294.5, RBL 18 TO 50 CORRODED ON UPPER CHORD. REPAIRED PER SRM 53-10-51, FIG 205. (M)
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
SEA - DURING SI CHECK, FOUND MAIN CABIN FLOORBEAM, BS 294.5, RBL 18 TO 50 CORRODED ON UPPER CHORD. REPAIRED PER SRM 53-10-51, FIG 205. (M)