As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CLE FLIGHT 2705 THE CREW REPORTED NR 1 PACK NOISE FROM THE ACM WITH SMELL AND SMOKE FROM THE SIDE VENTS. MAINTENANCE INSPECTED AND RELEASED THE AIRCRAFT IAW MEL 21-51-00/1. MAINTENANCE REMOVED AND REPLACED THE NR 1 ACM.OPERATIONAL CHECKS WERE GOOD..