What was found
DURING C CHECK, NR 2 ENGINE INLET "S" DUCT LOWER. ACCESS DOOR, INSIDE INTERIOR DOOR SKIN IS CORRODING PLUS PEELING ALONG DOOR SKIN EDGES. REMOVED CENTER ENGINE INLET ACCESS DOOR IAW B 727 MM 52-40-31. REMOVED INNER SKIN, LOCATED, AND DRILLED NEW SKIN AS PER SAMPLE IAW B-727 SRM 54-10-2. SKIN ALODINED AND PRIMED IAW B-727 SRM 51-10-2 AND INSTALLED IAW B-727 SRM 51-30-2. INSTALLED CENTER ENGINE INLET ACCESS DOOR IAW B-727 M.M. 52-40-31. OPS CHECK GOOD IAW B-727 M.M. 52-40-0.