What was found
C-CHECK, CORROSION BLISTERS ON FLOORBEAM TOP FWD EDGE AT NUT PLATES STA 1140 BETWEEN NR 2 AND NR 4 SEAT TRACKS. REMOVED ENTIRE UPPER SECTION AND INSTALLED DOUBLER PER EO NR 98-924-04 0N 8110-3, DATED SEPT 24, 1998 UNDER WORK ORDER NR 1302.