What was found
AFT CARGO RIGHT 'Z' CHANNEL HAS CORROSION AROUND FASTENER HOLES ON STA 747 TO 767 CORRECTION TO FAULT DESCRIPTION: AFT CARGO RIGHT FWD 'Z' CHANNEL HAS CORROSION AROUND FASTENER HOLES ON STA 747 TO 767<[01] REMOVED CORROSION ON AFT CARGO FWD RIGHT Z CHANNEL; FOUND OUT OF LIMITS AND REMOVED; FABRICATED MATERIAL USED: BAC1496-377 7075T6 AND INSTALLED NEW RIGHT FWD Z CHANNEL. PER SRM 51-10-02-0G-0; PER SRM 53-00-53-1A-2; PER SRM 51-40-02-0G-0; PER SRM 51-40-05-0G-0; PER AMM 51-21-41-370-803; PER AMM 51-21-72-370-804; PER AMM 51-21-73-370-804; PER SRM 51-40-10-2R-0; PER AMM 51-21-91-620-802 AND DWG# 146A7502 SHEET 49.;[02] VERIFIED STEP 1.