What was found
CORROSION COMMON TO PRESSURE FLOOR SILL AT NUTPLATE FS 513.00+9, RBL 42 ***AIRCRAFT REMOVED FROM SERVICE*** REMOVED CORROSION ON PRESSURE FLOOR SILL FS 513.00+9, RBL 42, PERFORMED HFEC INSPECTION WITH NO INDICATIONS, PERFORMED UT THICKNESS CHECK, REMAINING MATERIAL WITHIN LIMITS REF REO601R-53-41-666 REV C DATED 2012-11-06.