What was found
LH SLAT TRACK 1-2 FWD OTBD, AFT OTBD, AFT INBD (3EA) ROLLERS ARE WORN. (C-CHECK RO 11/04/2021) REMOVED AND INSTALLED LH SLAT TRACK 1-2 FWD OTBD, AFT OTBD, AFT INBD (3EA) NEW SIDE ROLLERS REF CRJ900 AMM 27-81-44-400-801-A01 AND CRJ900 AMM 27-81-44-000-801-A01.