What was found
FWD CARGO TRANSITION PROFILE CORRODED AT BS 500 AND BL 25R. GROUNDED - YES. REMOVED FWD CARGO TRANSITION PROFILE AT STA 500. LOCATED AND DRILLED NEW PART IAW B737-900ER SRM 51-40-05. P/N 143A8126Y38 PO 1132983.1 PER B DWG 143A8126 REV -. INSTALLED NEW PART IN FWD CARGO AT STA 500 R/H SIDE IAW B737-900ER SRM 51-40-02 AND B DWG 143A8126 REV -. ORIGINAL THICKNESS IS 0.050 PER SRM 53-30-15-01-1. MATERIAL REMOVED IS 0.013 REMAINING THICKNESS IS 0.037. FOUND TO BE OUT OF LIMITS IAW B737-900 SRM 53-30-15-1A-1.