What was found
FLOOR BEAMS AFT OF FS 559+80 ON LBL 9 AND RBL 9 HAVE CORROSION AT NUTPLATE LOCATIONS MARKED WITH RED TAPE. (C-CHECK) RO 2/21/2021. PERFORMED REPAIR TO FS 559. + 87€? AT RBL 9 FLOOR BEAM SUPPORT FLANGE IAW REO 601R-53-00-827 REV: -- DATE 2021-01-30 AND REF: CRJ 200 SRM 53-00-43 FLOOR SUPPORT STRUCTURE-REPAIR NO: 1 FLOOR BEAM FLANGE REPAIR. FIG 203. PAR. 1-5. A. STEPS 1-12. FOR REPAIR AT F.S 559.+ 87 AND LBL 9 SEE CAMP MX TRANS NR 22226018 TRANSFERRED FOR SEPARATION OF REPAIR DOCUMENTATION ON LINE ITEM 1 OF CONTINUATION CARD. COMPLIED WITH 51-900-1003-SKY AND FORM M-337. NO WEIGHT CHANGE FOR THIS REPAIR.