What was found
LOWER FUSELAGE SKIN AT BS 1503, LBL 4 HAS A GOUGE NEXT TO RIVET. GOUGE MEASURED .017" DEEP IN .060 THICK SKIN. DAMAGE OUT OF LIMITS PER SRM 53-00-01, DETAIL II. UPON REMOVAL OF DAMAGED SKIN, FOUND CORROSION ON BOTTOM OF WEB. REMOVED AND REPLACED WEB IAW SRM 51-40-02. FABRICATED REPAIR DOUBLER AND FILLER IAW SRM 53-00-01, REPAIR NR 16. INSTALLED REPAIR DOUBLER AND FILLER IAW SRM 53-00-01, REPAIR NR 16, FIG 201. THIS IS A CATEGORY "B" MAJOR REPAIR REQUIRING REPEAT INSPECTIONS IN 29,000 FLIGHT CYCLES PER SRM 53-00-01, REPAIR NR16, FIG 201, TABLE V.