What was found
FWD CARGO COMP BETWEEN STA 500 AND STA 500D LBL 21' ZEE CHANNEL UPPER SURFACE CORROSION / [01] REMOVED CORROSION AT FWD CARGO COMP BETWEEN STA 500 AND STA 500D LBL 21' ZEE CHANNEL; AS PER B737-7 SRM 51-10-02.;[02] ORIG. MAT. : 0.040'; MAT. REMOVED: 0.020'; REMAINING MAT. : 0.020'; FOUND OUT OF LIMITS AS PER B737-7 SRM 53-00-53-1A-2; FIG.103; DETAIL 'D'. TOOL USED: B/C: 174208; DUE DATE: 11/NOV/22.;[03] RECEIVED NEW 'Z' CHANNEL P/N: 143A7501U183; PO # 1772343; ISSUE TAG WN18090. 'Z' CHANNEL WILL BE INSTALLED ON CARD: TTG8Q004DHNZ.;[04] VERIFIED STEPS 1-3