B767-300 and 300 ER
Flight Crew Air Transport Pilot (ATP)
Aircraft Equipment Problem Critical
Flight Crew Executed Go Around / Missed Approach; Flight Crew Landed in Emergency Condition; General Declared Emergency
Aircraft
While on a normal approach to ZZZZ we put the landing gear down and did not get a GREEN down indication on the left main landing gear. We tested the light with no success. I took [control of] the aircraft and initiated a go-around. We were given radar vectors back for the approach. While on downwind the First Officer tried replacing the bulbs unsuccessfully. We declared an emergency; requested Aircraft Rescue and Fire [support] and had [station] operations notified. I gave the flight attendants their [preparation] items and made a [public address announcement] to the passenger notifying them we would be on the ground in 5 to 10 minutes. On approach we configured and asked Tower to see in our main landing gear was down and we briefed if we got any landing proximity warning we would do another go-around to further evaluate the problem. The Tower reported the main landing gear down; we had NO landing proximity warning and landed normally.
The pilots of a B767 identified a landing gear indication problem during approach and initiated a go around. After testing the light and attempting to replace the bulb; the crew began another approach. The crew requested visual verification from the Tower that the gear was down; and performed a normal landing.