As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PIT - FL 1640 - ON APPROACH, CREW DID NOT RECEIVE THE LEFT MAIN LANDING GEAR DOWN AND LOCKED LIGHT. CREW CYCLED THE GEAR WITH SAME RESULT. CREW SUBSTITUED SIMILAR LIGHTS FROM AND FOUND THAT THE ORIGINAL LIGHT BULBS WERE BURNED OUT. FLIGHT LANDED NORMALLY AT PIT. MAINTENANCE REPLACED THE BULBS. (M)