What was found
DURING HEAVY MAINTENANCE FOUND CORROSION ON FWD FUSELAGE FLOOR STRUCTURE, LH IB SEAT TRACK BEAM BETWEEN FR16 AND FR19. FWD FUSELAGE FLOOR STRUCTURE LH IB SEAT TRACK BEAM BETWEEN FR16 AND FR19 REPLACED WITH NEW IAW EMB SRM 51-41-01, 51-43-03 AND 51-43-04.A/C REMAINS IN CHECK.