As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FOUND AFT CARGO COMPARTMENT.RT SIDE Z CHANNEL FLOOR SUPPORT S-25R BETWEEN STA 727E AND STA 747 RBL 21' AND W.L. 153.5. EVALUATED CORROSION ON AFT CARGO COMP R/H Z CHANNEL BETWEEN STA 727E AND 747; FOUND EXFOLIATED CORROSION, AREA OUT OF LIMITS PER REF B737 SRM 53-00-53-1A-2; FIG 103 DETAIL D; FEBRICATE AND INSTALL NEW Z CHANNEL.