As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED SEVERE MOLD SMELL IN THE CABIN DURING FLIGHT WITH THE AIR CONDITIONING ON. MAINTENANCE DISCOVERED THE AFT EVAPORATOR DRAIN PLUGGED, RESULTING IN WATER SPILLAGE ONTO THE CARPET. THE CARPET WAS FOUND SATURATED WITH MOISTURE AND MOLDY. THE DRAIN WAS CLEARED AND THE CARPET WAS REPLACED.