What was found
CORROSION ON PRESSURE FLOOR SILL AT STATION 447, AND LBL 42. AIRCRAFT REMOVED FROM SERVICE. REMOVED CORROSION ON PRESSURE FLOOR SILL AT STATION 447, AND LBL 42, REF CRJ 200 SRM 51-21-06. MEASURE OF REWORKED AREA L=1.141" W=0.883" D=0.006", ORIGINAL THICKNESS IS 0.055", REF CRJ 200 53-41-45. REMAINING THICKNESS IS 0.049", REWORKED AREA FOUND TO BE WITHIN LIMITS, REF REPAIR ENGINEERING ORDER (REO) 601R-53-41-666 REV C DATED 2012-11-06.