What was found
FUSELAGE SKIN CORRODED AT FS 25.25 AND LONGERON 33R . ACCOMPLISHED MAJOR REPAIR TO FUSE SKIN, FS 24.0 TO 70.0, L33R TO L36R IAW EVA D853-00327 & DWG D85300327-001-D. SEE NR 00007 FOR REPAIR DETAILS. REV IR DATED 4/8/10, DWG NO D85300327-001-D REV IR DATED 4/12/10. REFERENCE 8110-3 DATED 4/12/10 FOR REPAIR DESIGN APPROVAL. AIRCRAFT WAS GROUNDED