What was found
DURING HEAVY CHECK MAINTENANCE FOUND FWD WET AREA LH SEAT TRACK IS CORRODED BETWEEN FRAMES 17-20 AS MARKED. REMOVED CORROSION BY BLENDING AT FWD WET AREA LH SEAT TRACK BETWEEN FRAMES 17-20 PER SRM 51-10-03. FOUND TO BE IN LIMITS PER SRM 53-10-10/AD01AND ETD2020-170-003814. TREATED, PRIMED AND TOP COATED AREAS PER SRM 51-23-04, 51-23-05, 51-23-06 A/C REMAINS IN CHECK.