What was found
AFT EQUIPMENT COMPARTMENT FUSELAGE FRAME CHANNEL FROM FS 689.5 TO FS 694.00 STR 24 LH HAS MULTIPLE DENTS. ***AIRCRAFT REMOVED FROM SERVICE*** REMOVED DAMAGED FRAME CHANNEL AND REPLACED WITH FABRICATED FRAME CHANNEL AT FS 689.5 TO FS 694.00 STR 24 LH. NEW CHANNEL PART NUMBER 601-35013 FORMED IAW CRJ200 SRM 51-24-21 REV. 38. RESTORED SURFACE FINISH IAW CRJ200 SRM 51-25-00 REV 38. CHANNEL INSTALLED IAW CRJ200 SRM 51-42-21 AND SRM 51-42-06 REV 38. APPLIED TOPCOAT IAW CRJ200 SRM 51-25-00 REV 38.