As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE AND FUMES IN THE CABIN / REPLACED RH AIR CYCLE MACHINE IAW CRJ 900 AMM 21-51-08-000/400-801. COMPLETED OPS CHECK IAW CRJ 900 AMM TASK 21-51-00-710-801 AND LEAK CHECK IAW CRJ 900 AMM TASK 21-51-00-790-801. OPS CHECK AND LEAK CHECK GOOD AT THIS TIME.