What was found
NR 1 PYLON OTBD AFT 311N5046-31 SKIN ASSY HAS CORROSION ON INTERIOR SURFACE BETWEEN FWD ACCESS DOOR OPENING AND PRECOOLER OPENING. REMOVED CORROSION FROM INTERIOR SURFACE IAW SRM 54-50-01 ORIGINAL MATERIAL 0.90 INCH, MATERIAL LOSS 0.013", MAT REMAINING 0.077 INCH, L= 5.5 INCH, W= 2.0 INCHES, D= 0.013 FOUND TO BE OUT OF LIMITS IAW SRM 54-50-01, DETAIL 5, FIG 101, RECEIVED AND COMPLIED WITH EA F-5450-131112 DATED 08/10/09, TREATED AND PRIMED REWORKED AREA IAW SRM 51-20-01 AND SOPM 20-43-03 THIS IS A CATEGORY "A" MAJOR REPAIR.