What was found
DURING HEAVY MAINTENANCE, AFT WET AREA BEAM, Y580, FOUND CORRODED AROUND THE LAVATORY AND F/A SEAT TRACK AT FRAME 66. R & R FLOORBEAM AT FRAME 66 AT Y580 AFT WET AREA AND LAVATORY F/A SEAT TIE DOWN FRAME IAW SRM 51-72-11 AND 51-42-11. THIS ITEM IS CLASSIFIED AS LEVEL 2 CORROSION.