What was found
CORROSION ON FCB AFT BULKHEAD-TO-FLOOR SUPPORT; BS 500D; RBL13; LBL 14; LBL 16; LBL 18 AND LBL 22 (ALL MARKED) ; / [01] REMOVED CORROSION ON BULKHEAD TO FLOOR SUPPORT AT BS 500D'; LBL22; WL 156 ; MEASURE L=5'X W=1'X D=0.010' MAX. MAT LOSS IS 0.010'; REMAINING THICKNESS IS 0.0061'; ORIGINAL THICKNESS IS 0.071'; FOUND TO BE OUT OF LIMITS; REWORKED AREA PER B737-700 SRM53-30-08; ALLOWABLE DAMAGE. MICROMETER;S/N 65092939 DUE 03/2022.; [08] INSTALLED LOWER RAIL OF AFT BULKHEAD OF FCB; BS500D IAW SRM 51-40-02 AND DWG 143A7902; [09] CORRECTION TO ITEM 2 CORRECTIVE ACTIONS. VERIFIED STEPS 1 - 5 COMPLETE.; [10] VERIFIED INSTALLATION OF AFT BULKHEAD LOWER CENTER SUPPORT PER SRM 51-40-02 AND DWG 143A7902.