As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANT REPORTED THAT SMOKE WAS IN THE PASSENGER CABIN AS THE AIRCRAFT WAS PASSING THROUGH 6000 FT. CREW DECLARED AN EMERGENCY AND RETURNED TO DEPARTURE AND LANDED WITHOUT INCIDENT. MAINTENANCE FOLLOWED THE AIRCRAFT FIM 21-20-00 AND FOUND RIGHT AIR CONDITIONING PACK TO BE FAULTY.