What was found
NR 1 PYLON O/B AFT 311N5046-31 SKIN PANEL ASSY HAS CORROSION ON INNER SURFACE. REMOVED AND INSTALLED STRIKER PLATE AND MOUNT FITTING PER SRM 51-40-02 AND DRAWING 311N5108. REMOVED AND INSTALLED HEAT SHIELD PER SRM 51-40-02. REMOVED AND INSTALLED FWD FAIRING PER SRM 51-40-02. REMOVED O\B AFT SKIN PER SRM 51-40-02. RECEIVED NEW SKIN ON FEDEX SERVICABLE TAG NR 4541B3 LOCATED AND DRILLED NEW SKIN AND INSTALLED SKIN PER SRM 51-40-02 AND DRWG 311N5002 CAT A MAJOR REPAIR NO FOLLOW UP INSPECTION REQUIRED.