What was found
AFT CARGO COMP. LT TRANSITION PANEL UPPER SURFACE HAS CORROSION FROM STA 767-827. AFT CARGO COMP. LH TRANSITION PANEL CORROSION.REMOVED AND REPLACED PANEL. NO ISSUES NOTED. REMOVED CORROSION ON TRANSITION PANEL FROM STA 767 TO STA 827 IAW B737-900 SRM 51-10-02. ORIGINAL THICKNESS .040, REMAINING IS .020, LOSS OF MATERIAL IS .020 FOUND OUT OF LIMITS IAW B737- 900 SRM 53-00-53. REMOVED AND REPLACED TRANSITION PANEL AS NEEDED FROM STA 727I+10 TO STA 787+10 IAW B737-900 SRM 51-40-02, SRM 53-00-53-2R-5 AND BAC DWG 146A7500 REV-.