What was found
INTERGRANULAR CORROSION DISCOVERED ON FUSE. EXTERIOR SKIN, FS 59.0, LONG 34L TO 35L. ACCOMPLISHED EXTERNAL DOUBLER REPAIR, FS 53.5 TO 70.0, LONG 34L TO 34R, IAW D857-00297 REV IR DATED 12/4/09, DWG NR D85300297-001-D REV IR DATED 12/4/09, AND SRM CHPT'S 51 & 53. REF 8110-3 DATED 12/4/09 FOR REPAIR DESIGN APPROVAL. THIS IS A CLASS II LIFE LIMITED MAJOR REPAIR: REFERENCE RFES R-19775 FOR EC GENERATION TO TRACK REINSPECTION THRESHOLDS.