What was found
LCQ - MAJOR REPAIR - DURING C-09 CHECK INTERGRANULAR CORROSION WAS FOUND ON FLOOR SUPPORT FRAME BS 1510, LBL 07 IN THE AFT CARGO COMPARTMENT . MAINTENANCE REMOVED CORROSION AND FOUND MATERIAL LOSS TO BE OUT OF LIMITS; REMOVED CORRODED SECTION OF FLOOR SUPPORT FRAME BS 1510, LBL 07; FABRICATED A REPAIR ANGLE; INSTALLED REPAIR PART IAW B757-200 SRM 51-70-11, PG. 1-7, FIG. 1.