As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER REMOVAL OF FITTING OF FWD LAVATORY A DETAILED VISUAL INSPECTION WAS PERFORMED IAW NDTM 52-2100 AND CORROSION WAS FOUND ON SEAT TRACK RBL 9 FS349-477. DUE TO EXCESSIVE DAMAGE, SEAT TRACK ON RBL 9 FS 349.00 TO FS 477.00, WAS REPLACED PER SRM 53-21-49-101-001-A01 AND AMM 53-00-49 (CONFIG A12).