What was found
CABIN FLOOR PANEL (NR 75) HAD CORROSION AROUND THE ATTACHMENT DURING A SCHEDULED INSPECTION AT TIMCO IN LAKE CITY FL, THE HOLES. REMOVED CORROSION AROUND FASTENER HOLES OF FLOOR PANEL NR 75. CHECKED WITH CALIPER NR A-2542 IAW DC9 SRM 53-01 AND FOUND TO BE OUT OF LIMITS. FABRICATED NEW FLOOR PANEL WITH 7075 T-6 .025 21 X 76 7/8 AND NEW HAT CHANNELS TREATED AND PRIMED FLOOR PANEL AND HAT CHANNELS IAW DC9 SRM 51-10-03, IAW DC9 SRM 57-10-03, IAW DC9 SRM 51-10-02 AND 53-21-0 FIG 4.