What was found
MAIN CABIN FLOOR SUPPORT, AFT GALLEY NR 4 LT SIDE INTERCOSTAL (BETWEEN LEFT SIDE FLOOR MOUNT FITTINGS) UPPER SURFACE HAS CORROSION ON SEVERAL AREAS. (LBL 22-26, STA 986.5-1016). GROUNDED - YES. REMOVED CORROSION IAW SRM 53-70-51. ORIG MAT 0.040, REMOVED 0.003, REMAINING THICK 0.037 FOUND TO BE WITHIN LIMITS IAW SRM 53-70-51 DWG 147A5712 REV.B ALODINED AREA IAW SRM 51-20-01, PRIMED AREA IAW SRM 51-20-01. REMOVED AND REPLACED NEW WALL SUPPORT P/N 147A5710U16 PO:1136976.1 IAW SRM 51-40-02 AND BOEING DWG 147A5700 REV B.