As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
***CORROSION*** ON FORWARD CARGO BAY FLOOR TO SIDEWALL SUPPORT AT B.S. 400-500D; L.B.L. 24; W.L. 157. / REMOVED AND INSTALLED ON FCB FLOOR TO SIDEWALL SUPPORT AT BS 400-500D LBL 24 ITEM 7530869 PO# 819643. LOCATED AND DRILLED IAW SRM 51-40-05; SRM 51-40-02; SRM.53-00-53-1A-2 AND DWG 143A7500 80641U 30MAR21