What was found
DURING HEAVY MAINTENANCE, FOUND CORROSION, FWD CABIN, SEAT TRACK AT FRAME 17, RBL 11 CORRODED, BLENDED CORROSION HFEC. NO DEFECTS NOTED. CUT OUT DAMAGED AREA AND FABRICATED PARTS DOUBLER AND FILLER. INSTALLED REPAIR AND APPLIED TOPCOAT. IAW SRM 53-10-10.