As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT CARGO BAY; Z-ANGLE (SHEILD) HAS CORROSION AT BS 767 TO BS 787 AND RBL 22 AND WL 157 / BLENDED CORROSION FROM AFT CARGO Z ANGLE (FWD SHEILD) STA 767 TO 787 RBL 22 IAW B737 SRM 51-10-02-0G-0. FOUND OUT OF LIMITS WITH MORE THAN 10% LOSS ORIG .050' REMAIN .030 LOSS .020 IAW B737 SRM 53-60-15-1A-1. REMOVED & REPLACED SHIELD IAW BOEING DWG 146A0081 REV A & B737 SRM 51-40-02-0G-0 P/N 146A8127-12