As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
R PACK AUTO FAIL CAUTION MSG. FA'S REPORTED SMOKE IN CABIN. PACK TEMP HIT 99C / TROUBLESHOT AND FOUND RH ACM TO BE SEIZED UP. REMOVED AND REPLACED RH ACM IAW CRJ 900 AMM 21-51-08-000/400-801-A01. RH PACKS SYSTEM OPS AND LEAKS CHECKS GOOD IAW CRJ 900 AMM 21-51-00-710/790-801.