What was found
MCN - MAJOR REPAIR - DURING C-18 CHECK 2 EACH .75 INCH CRACKS WERE FOUND IN EXTERNAL FUSELAGE SKIN AT LOWER AFT CORNER OF R-1 DOOR CUTOUT BS 329, STR 17 RT. MAINTENANCE CUT OUT CRACKED SKIN AT LOWER AFT CORNER OF R-1 DOOR CUTOUT BS 329, STR 17 RT; FABRICATED A INNER PLATE, MIDDLE PLATE, OUTER PLATE, AND 2 EACH FILLERS & TAPERED FILLERS; INSTALLED REPAIR PARTS IAW B737-300 SRM 53-10-01 FIG 202.