What was found
AFTER LANDING DURING TAXI IN HAD A RT PACK HIGH TEMP CAUTION MESSAGE (FROM DEFECT 423741-1; STRONG SMELL IN CABIN AFTER TAKEOFF. SMELL RESEMBLED SMOKE AND STARTED DISSIPATING. CHECKED ALL SYSTEMS AND RETURNED FOR PRECAUTIONARY OVERWEIGHT LANDING. (AIR RETURN-RELATED TO DEFECT REPORT 423714-1). T/S FOUND RT PACK FROZEN. REMOVED AND REPLACED RT ACM IAW CRJ200 MM 21-51-10. OPS AND LEAK CHECK GOOD. (S)