What was found
MAIN CABIN AFT WET AREA BS 947-967, LBL 24, INTERCOSTAL HAS CORROSION, REPAIR IS CLASSIFIED AS MAJOR, REPLACED IAW SRM 51-40-02 AND DRAWING 147A5650, REV C. REMOVED DAMAGE IAW SRM 53-70-51. ORIGINAL THICKNESS .080 MAT LOSS 0.060. FOUND TO BE OUT OF LIMITS IAW SRM 53-70-51. LOCATED AND DRILLED NEW INTERCOSTAL IAW DRAWING 147A5650, REV C. INSTALLED NEW INTERCOSTAL IAW DRAWING 147A5650 AND SRM 51-40-02.