As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE, FLOORBEAM AT Y -1292 RT FROM FRAME 68 TO FRAME 69 HAS CORROSION. REMOVED CORROSION FROM FLOORBEAM 2.0" W X 3.0" L X .156" 100 PERCENT MATERIAL LOSS FOUND TO BE OUT OF LIMITS IAW SRM 53-41-14. R & R FLOORBEAM IAW SRM 51-42-1.