What was found
NR 1 PYLON INBD AFT 311N5046-34 SKIN PANEL ASSY HAS CORROSION ON INNER SURFACE. FOUND SKIN ASSY CORRODED OUT OF LIMITS IAW SRM 54-50-01 (L= 1.5 INCH, W= 2.0 INCH, D= .028 INCH). ROUTED SKIN PANEL ASSY FOR REPAIR ON AMII WORK ORDER NR 7434, DATED 07/14/08 AGAINST W/C T F-5450-122806 AND EA F-5450-122806, REV "A", DATED 07/17/08. INSTALLED NR1 PYLON INBD REPAIRED SKIN PANEL ASSY IAW DRAWING 311N5002. THIS REPAIR IS CLASSIFIED AS A CATEGORY "A" MAJOR REPAIR.