What was found
WING PLANK LAND AT 540BB HAS FRETTING CORROSION, MARKED. C-CHECK RO 11/23/2020. REMOVED CORROSION ON LT WING PLANK LAND AT 540BB, REF REO, FOUND TO BE WITH IN LIMITS. COMPLIED WITH ALL STEPS OF REO, DATED 2014-02-05, NO LEAKS NOTED. BONDING TEST GOOD, REF CRJ 200 AMM TUC7801 DUE 28FEB21. COMPLIED WITH TASK CARD.