What was found
AFT CARGO COMP LT Z CHANNEL AT STA 727I HAS CORR AND IS CRACKED. GROUNDED - YES. REMOVED CORR ON AFT CARGO COMP LT Z CHANNEL AT STA 727I, FOUND TO BE OUT OF LIMITS DUE TO 100% MATL LOSS IAW SRM 53 00 53 1A 2 STEP 2D AND FIG 103 DETAIL D. REMOVED CORRODED AND CRACKED 2 CHANNEL, REPAIRED AND INSTALLED NEW 2 CHANNEL IAW SRM 53 00 53 2R 5 REPAIR 5 STEPS 4.B,C,D,E,F,G,H,I,J,K,L,M W 1 O .040 R .00 L 3.00 D .040.