Flight Crew Air Transport Pilot (ATP)
Troubleshooting
Aircraft Equipment Problem Less Severe
Air Traffic Control Provided Assistance; Flight Crew Executed Go Around / Missed Approach; Flight Crew Overcame Equipment Problem
Aircraft
Putting the gear down; the left main light did not illuminate. The decision was made to go around. Eventually after about 15 seconds; the left main gear down and locked light did illuminate. However the decision was already made to not land. Approach gave us a heading of 180 and altitude of 6;000 ft. We cycled the gear one more time and experienced the same. The left main gear did not illuminate down and locked until about 15 seconds after the selection of gear down. The QRH was handed to the First Officer; the correct procedure was selected (Gear will not extend hydraulically) and run through the process. Since all three gear down and locked lights were on; it was determined through the flow chart that the aircraft was safe to continue to land. The landing was without incident and we were able to taxi to the gate.
[Report narrative contained no additional information.]
C402 flight crew reported executing a go-around after the left main gear was slow to indicate down and locked.