As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED THAT DURING CLIMB THERE WAS SMOKE IN THE CABIN AROUND SEAT 9A. DECLARED AND EMERGENCY AND RETURNED TO FIELD, LANDED WITHOUT INCIDENT. MAINTENANCE FOUND AIR CONDITIONING DUCT DISCONNECTED AND PRODUCING CONDENSATION INSIDE CABIN. DUCT RECONNECTED AND ALL CHECKED SATISFACTORY. NO FURTHER DEFECTS WERE REPORTED.