What was found
LCQ - MAJOR REPAIR - DURING C-09 CHECK CORROSION WAS FOUND ON STRINGER 29 L/H, AT BS 1680. MAINTENANCE CUTOUT 4" SECTION OF CORRODED STRINGER AND FOUND CORROSION ON SKIN; CLEANED CORROSION OFF SKIN AND FOUND MATERIAL LOSS OUT OF LIMITS; CUTOUT CORRODED SECTION OF AIRCRAFT SKIN; PERFORMED HFEC INSPECTION OF SKIN AND STRINGER CUTOUTS TO VERIFY NO CRACKS EXIST; FABRICATED A NEW SECTION OF STRINGER, AND A STRINGER SPLICE IAW B757-200 SRM 53-00-03, PG. 201. FABRICATED A REPAIR DOUBLER FOR SKIN CUTOUT; INSTALLED REPAIR PARTS IAW AWA E.R. 19-5361-02345-SS2.