As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3254 - THE CREW REPORTED THAT THE MAIN LANDING GEAR WOULD NOT RETRACT AFTER TAKEOFF. THE CREW RETURNED THE AIRCRAFT TO IAH AND LANDED WITHOUT INCIDENT. MAINTENANCE REMOVED AND REPLACED THE MAIN LANDING GEAR CONTROL LEVER IAW ATR-42-320 MM 32-31-00 AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE (M)