What was found
AFT PIT STA 767-787; RBL21 'Z' CHANNEL; CORROSION AROUND 4EA FASTENER HOLES; UPPER & LOWER SURFACE; MRK'D. / REMOVED CORROSION IAW B737-800 SRM 51-10-02-0G-0; VERIFIED MATERIALS LIMITS AS ORG 'T' = .050'. REMAINING 'T' = .041'; LOSS OF .009' FOUND TO BE OUT OF LIMITS IAW B737-800 SRM 53-60-15-1A-1 FIG 103; D. REMOVED AND REPLACED SHIELD P/N 146A8127-12 - ATAG WN3071 IAW B737-800 SRM 51-40-02-0G-0 AND BOEING DWG 146A0081 REV - ATAG WN3077 AAR TOOL # 36644 DUE 09-26-18