As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT-BOS - FLT 564 - DURING APPROACH, RECEIVED LANDING GEAR UNSAFE INDICATIONS WHEN THE LANDING GEAR WAS SELECTED DOWN. RECYCLED THE LANDING GEAR AND RECEIVED NORMAL GEAR DOWN INDICATIONS. THE FLIGHT LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE CHECKED AND ADJUSTED THE RIGGING OF THE LANDING GEAR CONTROL VALVE. A GEAR SWING WAS ALSO ACCOMPLISHED. OPERATIONALLY CHECKED OK. (M)