As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STL - AFTER TAKEOFF SMOKE WAS REPORTED EXITING SIDEWALL SEAT ROWS 10 AND 11, RIGHT SIDE. VISUALLY CHECKED AREA. REMOVED SIDEWALL AND FOUND THREE INCH AIR CONDITIONING DUCT CONNECTOR LOOSE CAUSING CONDENSATION TO EXIT DUCT. REINSTALLED DUCT CONNECTOR. OPERATED AIR CONDITIONING SYSTEM AND ALL CHECKED NORMAL. (M)