As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3934 - THE CREW REPORTED SMOKE IN THE CABIN, THE AIRCRAFT WAS DIVERTED TO VCT AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE RIGHT RECIRCULATION FAN IAW ATR-42 MM 21-22-21. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)