What was found
DURING ROUTINE MAINTENANCE, CORROSION WAS DISCOVERED ON FLOORBEAM AT FRAME 66-68 -Y1162 THROUGH -Y1292. R & R FLOORBEAM FRAME 66-FRAME 68 BETWEEN -Y1162 THROUGH -Y1292 IAW SRM 51-72-11, REV 114, SRM 51-42-11, REV 114, PN D5347217220500.