As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT NR 6198 - IAD-BDL - DURING APPROACH, DECLARED AN EMERGENCY DUE TO THE LEFT MAIN GEAR DID NOT INDICATE DOWN AND LOCKED WHEN EXTENDED. AIRCRAFT LANDED WITH NO FURTHER INCIDENTS AND ALL PASSENGERS SAFE. MAINTENACNE CLEANED THE LEFT DOWNLOCK MICROSWITCH. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)