What was found
AFT CABIN FLOOR, LT FLOORBEAM, P/N 170-65669-003, HAS AREAS OF CORROSION AROUND FASTENERS AND AN AREA OF 10MM X 2MM FROM FRAME 88 - 89. X=22847 TO 23865, Y= -273. REMOVED AND REPLACED AFT CABIN LT FLOORBEAM IAW SRM 51-41-01 & 51-43-01 PER EO E175-53MR-093 REV 3.