What was found
FS 441 & RBL 42 HAS CORROSION ON FLOOR SILL PANEL AT NUTPLATE. AIRCRAFT REMOVED FROM SERVICE. REMOVED CORROSION AT RT FLOOR SILL PANEL AT FS 441 & RBL 42, REF CRJ 200 SRM 51-21-06. REWORK AREA MEASURES 1.067" L X 1.414" W X .003" D. PERFORMED HFEC NO INDICATIONS NOTED, REF NDTM PART 1 51-20-06 REV 41. TREATED, PRIMED, PAINTED, AND APPLIED CPC, REF BOMBARDIER REO 601R-53-41-666 REV C DTD 2012-11-06.