What was found
AFT CARGO COMPARTMENT FLOOR SUPPORT RAIL FROM STA 727A TO 727B LBL 17.24' HAS CORROSION AROUND FASTENERS HOLES (107-019) / [01] FOUND DEEP CORROSION AROUND FASTENERS HOLES ON FLOOR TRACK FROM STA. 727A TO STA 727B; OUT OF LIMITS PER REF 737 SRM 53-00-53-1A-2 NO CORROSION ALLOW; AROUND FASTENER HOLE;[02] VERIFIED STEP 1.;[03] START TO REMOVE FASTENERS ON AFT CARGO COMP. FLOOR TRACK; PER REF. B737 SRM 51-40-02-0G-0;[04] FOUND DEEP CORROSION AROUND FASTENERS HOLES ON FLOOR TRACK FROM STA. 727A TO STA 727B; OUT OF LIMITS PER REF 737 SRM 53-00-53-1A-2 NO CORROSION ALLOW; AROUND FASTENER HOLE DAMAGE TRACK REPLACED ON CUSTOMER BAR CODE TTG8Q00AUHNB;[05] VERIFIED STEPS 3 AND 4.