What was found
DURING C-CHECK, CORROSION ON UNDERSIDE OF INBOARD FLANGE OF SEAT TRACK LBL 45 BS 560 TO 640. INSTALLED NEW TRACK LBL 45 FROM BS 480 TO 590 PER SRM 53-10-5, SPLICE 17 LONG. REMOVED LIGHT CORROSION ON UNDERSIDE OF INBOARD FLANGE TRACK LBL 45 FROM BS 590 TO 670 PER SRM 51-10-6. MATERIAL REMOVED .005 WAS WITHIN LIMITS PER SRM 53-10-1, NR3661.