As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LH SLAT TRACK 1-2 FWD AND AFT OB SIDE ROLLERS AND FWD IB SIDE ROLLER WORN OUT OF LIMITS. REMOVED AND REPLACED LH SLAT TRACK 1-2 IB AND OB FWD ROLLERS PER AMM 27-81-44-400-801 (CONFIG A01) REEVALUATED LH SLAT TRACK 1-2 AFT OB SIDE ROLLER FOUND TO BE WITHIN LIMITS IAW AMM 27-81-43-220-801 (CONFIG A01) STEP 4. E. (1) - (7) AND REINSTALLED PER CRJ 900 AMM 27-81-44-400-801 (CONFIG A01)