What was found
AFT CARGO BAY LEFT SIDE STA. 727-787 ZEE CHANNEL SIDEPLATE HAS CORROSION AT NUMEROUS FASTNER HOLES<[01] REMOVED DAMAGED AFT CARGO BAY LEFT SIDE STA; 727-787 SEE CHANNEL SIDE PLATE. LOCATED; DRILLED; DEBURRED AND INSTALLED NEW CHANNEL IAW SRM 51-40-02.;[02] REMOVED AND REPLACED LT SIDE AFT CARGO BAY ?Z? CHANNEL REF SRM 51-40-02 AND DWG 146A7500;[03] CORRECTED SIGN OFF REF;[04] QC CONCURS WITH REFERENCE UPDATE.