What was found
* EXTERIOR FUSELAGE SKIN HAS CORROSION ON AND AROUND MULTIPLE RIVETS BETWEEN APPROX. FS 559.00 + 80 TO 559.00 + 112, AT LOWER CENTER FUSELAGE AREA. ( STGR 25L TO STGR 25R ). (C-CHECK) RO 2/9/2021 BLENDED ALL FOUR AREAS TO A SMOOTH CONTOUR AND RESTORED FINISH. REMAINING MATERIAL WITHIN LIMITS. REF REO 601R-53-51-544 REV -- DATED 2020-12-31 AND CRJ200SRM 51-21-06. COMPLIED WITH TASK CARD 51-900-1003-SKY. LEAK CHECK GOOD.