As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A HEAVY MAINT CHECK, CORROSION WAS FOUND ON SEAT TRACK SUPPORT ANGLE BETWEEN STATIONS 1030 AND 1050 RBL 44 IN CABIN FLOOR STRUCTURE. REMOVED CORROSION FROM SUPPORT ANGLE IAW B727 SRM 511006. CORROSION FOUND TO BE OUT OF LIMITS IAW B727 SRM 531001. FABRICATED PART FROM 44871, 7075 T6511. TREATED AND PRIMED IAW B727 SRM 511006. INSTALLED IAW SRM B727 513001.