What was found
FOUND DURING HEAVY CHECK. MAJOR REPAIR, LEVEL 2 CORROSION ON FUSELAGE SKIN UNDER ICE SHIELD AT FASTENER HOLES. SRAS, S535R0234...4328, NOT DO/TS 5570/07. CUT OUT FUSELAGE SKIN AND FUSELAGE SKIN CROWN PANELS FROM FRAMES 23 TO 23C AND STRINGERS 1A TO 4L. INSTALLED FACTORY NEW SKIN PANELS AND ADDED SINGLE BUTT SPLICES TO PANELS AT CUTOUT. WO 72242, NR 200080. (K)