As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLT 3490 - THE CREW REPORTED THAT THE RIGHT MLG UNLOCK LIGHT ILLUMINATED AND THE MASTER CAUTION STAYED ON IN FLIGHT. THE CREW RETURNED TO IAH WITHOUT INCIDENT. MAINTENANCE ADJUSTED NR 1 MLG DOWNLOCK SWITCH IAW ATR 42-320 MM 32-61-00, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)