What was found
STR / AFT CARGO COMPARTMENT ANGLE UNDER R/H TRANSITION PANEL IS CORRODED BETWEEN STA 1440 AND STA 1460, RBL 25. 031-013. ATA-53-00.REMOVED CORRODED ANGLE FROM LOWER SIDE OF R/H TRANSITION PANEL STA 1440 TO STA 1460 TO F.O.M.IAW B757-200PF SRM 51-40-02-OG-0.REMOVED CORROSION AT ANGLE AND FOUND TO BE OUT OF LIMITS IAW B757-200PF SRM 53-00-53-1A-1 (100% MATERIAL LOSS).FABRICATED CHORD PN 146N5215-1SAAU FOR AFT CARGO RH TRANS PNL, IAW DWG 146N5215.INSTALLED FABRICATED CHORD PN 146N5215-1SAAU AND R/H SIDE TRANSITION PANEL AT AFT CARGO STA 1440 TO STA 1500 IAW B757-200PF SRM 51-40-02-0G-0