As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT 3769, CORROSION OUT OF LIMITS ON SEAT TRACK RBL 45 BTW STA 500H+10 TO 520. CORRECTIVE ACTION: CORROSION LEVEL 2 - SEAT TRACK RBL 45 BTW STA 500H+10 TO 520 WAS FABRICATED PER BAC1520-2789 REV. (B) AND B737-800 SRM 53-00-52-2R PROCEDURE 4, REPAIR 4, AND INSTALLED PER B737-800 SRM 51-40-02-0G PAR 7. (LP 1164096)