What was found
C11 SYS 6 CHECK LEVEL 2 EXFOLIATION CORROSION ON AFT CABIN FLOOR STRUCTURE Z BEAM BETWEEN FRAME 64 TO FRAME 66, Z 500 & Y 1292. REPLACED AFT CABIN FLOOR STRUCTURE Z BEAM BETWEEN FRAME 64 TO FRAME 66, Z 500 & Y 1292 IAW SRM 53-11-14, 51-42-11 & 51-72-11.