What was found
LBL 9 FLOOR BEAM INBOARD LIP CORRODED FROM FS 605 TO 621, MARKED. C-CHECK RO 11/21/2020. REMOVED CORROSION FROM DISCREPANT AREA, REF CRJ200 SRM. FLOOR BEAM ORIGINAL THICKNESS .050, REMOVED .012, REMAINING .038 OUT OF LIMITS. REMOVED AND INSTALLED NEW FLOORBEAM CAP P/N=N126-1577 P/O T55897 AT LBL 9 BETWEEN APPROXIMATELY FS 569 TO FS 621, REF BOMBARDIER REO DWG AND CRJ-200 AMM AND CRJ200 SRM. INSTALLED ALL REMAINING FASTENERS TO NEW FLOORBEAM CAP FROM APPROXIMATELY FS 569 TO FS 621 LBL 9 REV.