What was found
B757-53-3-6494 OFF AIRCRAFT PART. CORROSION FOUND AFTER REMOVAL OF PART FOR F.O.M. AFT CARGO DOOR SILL (UPPER CHORD) CORROSION A T NUMEROUS LOCATIONS, TO INCLUDE UNDER NUTPLATES 5995-918 AFT CARGO DOOR SILL UPPER CHORD AT STA 1345-1465 RBL 22-5 CORROS ION REMOVAL FOUND OUT OF LIMITS IAW B757-200 SRM 53-60-15 FIG 10 1 L=.5, W=.5, D=.035. LOCATED NEW CHORD P/N 146N8522-57, PO SAG1 890693 IAW B757-200 SRM 51-40-05. SEE CARD 0019657 FOR REMOVAL A ND INSTALL.