As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE IN CABIN. C/W GVI OF AFT EQUIPMENT BAY IAW CRJ 900 AMM 53-60-01-PSA. NO VISUAL DEFECTS NOTED. T/S PER CRJ 900 FIM 21-22-00-810-806 AND FOUND ISSUE TO BE WITH THE RH PACK. MAINTENANCE REMOVED AND REPLACED R/H AIR CYCLE MACHINE OPS CHECK GOOD AT THIS TIME