What was found
DURING C-CHECK, CORROSION ON BS 344 FLOORBEAM UPPER CHORD AROUND NUT PLATES ATTACHING 9G BULKHEAD TO FLOORBEAM LBL 50 - RBL 50 WL 208, AS VIEWED FROM NWW DOGHOUSE AREA. REMOVED 9G BULKHEAD, FLOORBOARDS AND SHEAR WEB FOR ACCESS IAW B727 SRM 51-30-2 AND MM 53-20-11. REMOVED DAMAGED UPPER CHORDS BS 344 AND FABBED NEW FROM BAC 1505-29222 PO 3348139 DIM 11.75 INCH LONG IAW B727 SRM 51-20-1 & 53-10-2 FIG 7. NEW CHORD TREATED AND PRIMED IAW B727 SRM 51-10-2 AND INSTALLED IAW B727 SRM 51-30-2. REINSTALLED SHEAR WEB, FLOORBOARDS AND 9G BULKHEAD IAW B727 SRM 51-30-2 & MM 53-20-11.