As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CORROSION REMOVAL FOUND AFT CARGO L/H SIDEPLATE SUPPORT ZEE WITH MULTIPLE ELONGATED HOLES AT NUTPLATES ATTACHED POINTS SECTION BETWEEN STA 727 AND STA 747+12.5' LBL 21'<[01] REMOVED AND REPLACED LH Z-CHANNEL FROM STA 727 TO 847 LBL 21 PER SRM 51-40-02-0G-0 AND DWG#146A7500;[02] VERIFIED STEP 1 FINAL