As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN DALFORT FOR C-CHECK, MAINTENANCE FOUND CORROSION FORWARD CARGO BAY IN NUTPLATE HOLES IN THE LOWER FLANGE OF THE S40 FLOOR BEAM LBL 17-RBL 58 WL 201. MAINTENANCE BLENDED CORROSION AND FOUND OUT OF LIMITS, CUT FLOOR BEAM LOWER FLANGE AND REPAIRED IAW E.O. B727-5310-7452-A.