What was found
DURING HEAVY CHECK MAINTENANCE FOUND CORROSION, FORWARD WET AREA ON FLOOR DOUBLER FORWARD EDGE AT FRAME 19. REMOVED DAMAGED FLOOR DOUBLER AT FRAME 19 (LH SIDE) FWD WET AREA. LOCATED, DRILLED AND INSTALLED NEW FLOOR DOUBLER AT FRAME 19 (LH SIDE) FWD WET AREA. SURFACE PROTECTION APPLIED. REF EMB SRM 51-40-08. A/C REMAINS IN CHECK.