As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION SPOTS FOUND AT FWD CARGO LH 'Z' CHANNEL FROM STA 400 TO STA 500D LBL 21 AT WL 153.5 / FWD CARGO L/H Z CHANNEL FROM STA 400 TO STA 500D CORROSION FOUND OUT OF LIMITS REF B737-700 SRM 53-00-53-1A-2 FIG 103 DETAIL D. REMOVED AND REPLACED Z CHANNEL BETWEEN STA 396 AND STA 500D LBL 21 WL 153.5 REF B737-700 SRM 53-00-53-2R-5 AND DWG #143A7500.