As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
C4 - INTERNAL FUSELAGE UNDERFLOOR AT STA X50.000 TO 71.000 ABOVE STR 31 RT, SEAT TRACK HAS UPPER SURFACE CORROSION. CORROSION FOUND TO BE OUT OF LIMITS IAW RD8/4-53-2358. REMOVED NR 11 SEAT TRACK IAW SRM 51-42-05-02-01. MATCH DRILLED NEW TREATED AND PRIMED TRACK IAW SRM 51-40-07-02-01, 51-21-10-02-01 AND 51-25-10-02-01. INSTALLED TRACK IAW SRM 51-42-05-02-01 AND 51-40-15-02-01.