What was found
IAH-DURING C-CHECK INSPECTION, THE CENTER BUTTSTRAP WAS FOUND TO BE CORRODED FROM FRAME 15 TO FRAME 18. MAINTENANCE REMOVED THE CORRISION, AND PERFORMED A DOUBLER REPAIR IN ACCORDANCE WITH CONTINENTAL EXPRESS ENGINEERING CHANGE EC5310-01141, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. A/C TT=3937.4 CYC=2616