What was found
***CORROSION*** FORWARD CARGO COMPARTMENT AFT BULKHEAD STRUCTURE: LOWER SUPPORT RAIL HAS CORROSION ON UPPER SURFACE. BS 500I; LBL 24 TO RBL 24; WL 156. / CORROSION ON FWD CARGO COMPARTMENT AFT BULKHEAD SUPPORT RAIL FOUND TO BE OUT OF LIMIT DUE TO NO SRM ALLOWABLE LIMITS AND IS ONLY REPAIRABLE BY REPLACEMENT IAW SRM 51-10-02-0G-0 9C. REMOVED AND REPLACED AFT BULKHEAD LWR SUPPORT IAW SRM 5-40-02-0G-0 AND BOEING DWG 143A9481