What was found
LCQ - MAJOR REPAIR - DURING C-09 CHECK INTERGRANULAR CORROSION WAS FOUND ON MAIN CABIN AFT SHEAR DECK UNDER G4B GALLEY AT BS 1715, BL 0 TO RBL 48. MAINTENANCE CUTOUT DAMAGE ON AFT SHEAR DECK BS 1715, BL 0 TO RBL 48; FABRICATED A REPAIR DOUBLER; INSTALLED REPAIR PART IAW B757-200 SRM 53-60-51, FIG 203 PG 204-208.