What was found
CORROSION ON AFT CARGO BAY DOUBLER ATTACHED TO TENSION STRAP AND INTERCOSTAL AT RBL 20 BS 787+9. / [01] NO ALLOWABLE LIMITS GIVEN PER SRM. REPAIRED BY REPLACEMENT PER SRM 51-10-02-0G-0. LOCATED AND DRILLED NEW STRAP PER SRM 51-40-05-0G-0 AND DWG 146A8128. APPLIED CHEMICAL CONVERSION COATING TO BARE METAL PER AMM 51-21-41-370-802.;[02] REQUEST OK TO INSTALL.;[03] VERIFIED CORRECTIVE ACTION 1 AND 2.;[04] INSTALLED REPLACEMENT NUT PLATE STRAP AT B.S. 787-787+7 PER SRM 51-40-02-0G-0 AND DWG 146A8120 SHT 19.;[05] VERIFIED CORRECTIVE ACTION 4;[06] VERIFIED ALL STEP ACCOMPLISHED