As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ASH 2693 FROM CLT TO LIT THE CREW WROTE UP THE NR 2 PACK HEAT WAS UNCONTROLLABLE AND PRODUCED A SMOKE SMELL IN THE A/C. MAINTENANCE FOUND THE CONDENSER/MIXER CRACKED CAUSING HEAT FROM THE BLEED AIR SYSTEM TO MELT THE GROUND AIR T-DUCT AND A HEAT SENSOR. 12/19 MAINTENANCE REPLACED GROUND AIR T-DUCT AND TEMP SENSOR. DUCT P/N 145-22277-403 AND 145-22285-401.