What was found
DURING HEAVY MAINTENANCE, FOUND CORROSION DAMAGE TO THE TOP FLANGE OF THE FORWARD FUSELAGE FLOORBEAM AT FRAME 17 BETWEEN LT & RT SEAT TRACKS. AFTER BLENDING OUT THE AREAS, IT WAS DETERMINED THAT THE REMAINING THICKNESS WAS OUT OF LIMITS. PERMANENT REPAIR WHICH INVOLVED FILLING THE 2 DEEPEST AREAS WITH RESIN AND INSTALL AN L-SHAPE EXTRUDED ANGLE, REF TO E14-025-01.