As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BUF - FLT 0640 - THE RT MLG GAVE AN UNSAFE GEAR INDICATION WHEN GEAR WAS EXTENDED ON APPROACH TO BUF. 'ABNORMAL' PROCEDURES WERE FOLLOWED AND A TOWER FLY-BY WAS CONDUCTED. THE GEAR WAS CONFIRMED DOWN AND LOCKED AND THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE RT MLG UPLOCK ACTUATOR AT FAULT. THE UPLOCK ACTUATOR WAS REMOVED AND REPLACED. THE GEAR WAS SWUNG SEVERAL TIMES AND OPERATION CHECKED GOOD. (X)