What was found
CORROSION ON LBL 9 FLOOR BEAM AT APPROXIMATELY FS 473 ON INBOARD FLANGE, MARKED. C-CHECK RO 12/20/2020. REMOVED CORROSION ON FLOOR BEAM INBD FLANGE APPROXIMATELY FS 473 LBL 9, REF CRJ200 SRM. 2.42"L X 0.68"W X 0.021"/0.014 '/0.008D. ORIGINAL MATERIAL THICKNESS IS 0.060", REF CRJ200 SRM AND STANDARDS MANUAL B0525000, LOWEST REMAINING THICKNESS IS 0.039" FOR A LOSS OF 0.021". FOUND TO BE OUT OF ALLOWABLE LIMIT OF 0.005" MAX MATERIAL REMOVAL, REF BOMBARDIER REO RECEIVED AND COMPLIED WITH MHIRJ REO.