What was found
MCN - MAJOR REPAIR - DURING C-04 CHECK CORROSION WAS FOUND ON SKIN AT FR 63 BETWEEN STR 43 AND STR 44 LT. MAINTENANCE CUTOUT DAMAGED SKIN AT FR 63 BETWEEN STR 43 AND STR 44 LT; FABRICATED A REPAIR DOUBLER; INSTALLED REPAIR PART IAW A320 SRM 53-51-11, FIG. 203, PG. 221-224, AND SRM 51-42-11, FIG. 2-7, PG. 7-20.