As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, UPPER CABIN NR 5 SEAT TRACK BS 380 TO BS 344 RBL 45 WITH CORROSION. DAMAGE FOUND TO BE OUT OF LIMITS IAW 727 SRM 53-10-1 FIG 3. REMOVED DAMAGED SEAT TRACK & INSTALLED NEW P/N BAC1520-792 PO 990203 DIM135.5 INCHES LONG IAW 727 SRM 53-10-5 FIG 7.