What was found
DURING C-4 CHECK, INSPECTION REPORTED AFT LAV PAN BETWEEN STA 1016 AND THE AFT PRESSURE BULKHEAD HAD THREE CORRODED FASTENERS ON RT SIDE, 16 INCHES FROM CENTER LINE. REMOVED CORRODED AREA ON CABIN FLOOR PAN AND INSTALLED A FILLER AND REPAIR DOUBLER PER EA 57-737-165 AND SRM 51-40-2.