What was found
DURING HEAVY MAINTENANCE, CORROSION WAS DISCOVERED ON FLOOR SUPPORT BETWEEN FRAMES 69 - 70. FOUND TO BE OUT OF LIMITS IAW SRM 53-41-17. REMOVED THE FLOOR SUPPORT IAW SRM 51-42-11. RECEIVED, LOCATED, DRILLED, DEBURRED AND INSTALLED A NEW SUPPORT IAW SRM 51-42-11 AND DWG D53471123.