What was found
MCN - MAJOR REPAIR - DURING C-04 CHECK CORROSION WAS FOUND ON EXTERNAL SKIN BETWEEN FRAMES 60 AND 61, AT BL 0, UNDER ANTENNA CUTOUT. MAINTENANCE CUT OUT CORROSION ON EXTERNAL SKIN BETWEEN FRAMES 60 AND 61, AT BL 0; FABRICATED A DOUBLER; INSTALLED REPAIR PART IAW A320 SRM 53-00-11 PG 203, 208, 210-212 FIG 203.