As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FRAME AT FS 310 CORRODED BETWEEN STGR 26L AND STGR 26R. C-CHECK RO 1/6/2021. PERFORM REPAIR TO FRAME SECTOR AT FS 310 BETWEEN STGR 23L AND 24R, IAW REO 670-53-21-799 REV A DATED: 2016-11-27 REF -202 INSTALL ALL APPLICABLE STEPS 1-20 COMPLETED.