As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BOS - DURING APPROACH, AFTER THE LANDING GEAR WAS EXTENDED RECEIVED L/G DOORS NOT CLOSED MESSAGE. THE LEFT MAIN LANDING GEAR DOOR INDICATED PARTIALLY OPEN ON ECAM. FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES AND CYCLED LANDING GEAR HANDLE. ALL INDICATIONS NORMAL AND AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE CLEANED THE CANNON PLUGS ON BOTH MAIN LANDING GEAR DOOR PROXIMITY SWITCHES AND OPERATIONAL CHECK OK.