Narrative:

Departure and en-route were all normal. Arrival and subsequent visual approach to ZZZ were also uneventful. When the gear lever was selected down; only 3 red lights illuminated. The gear panel test button illuminated all lights correctly when pressed. Another attempt to lower the gear normally also resulted in 3 red lights and no green gear lights. At this point; the landing was cancelled; we began climbing to pattern altitude; and asked tower to allow us space to orbit west of the field to troubleshoot the problem. Tower suggested left traffic at pattern altitude which we accepted. After becoming established in left traffic we consulted the QRH to determine the appropriate procedure. We then executed procedure as indicated. The first officer (first officer) performed each step and the captain verified. At the completion of the procedure 3 red lights and 2 green lights (right main; nose wheel) illuminated. We requested a low approach on yyl to get a visual confirmation by tower. Tower was unable to determine the position of the gear and suggested a low pass along [a parallel taxiway] so that they could get a better angle of view. Tower suggested a 5 mile final for [parallel taxiway] but the fuel state by this point was such that one short pass and then an immediate return for landing would be necessary. We [made] the pass on [parallel taxiway] and tower was able to confirm that only the right main and nose wheel were down. At this point there was about 500 lbs of fuel remaining; we stated we would be landing on xxl. We made normal left traffic to xxl and touched down on the right main only; gently lowered the nose; deployed air brakes and held the left wing up as long as possible while maintaining centerline with rudder and braking as long as possible. When the aircraft came to a complete stop; we shut down the engines; pulled the fuel cutoff and turned all electrical systems off. We verified there was no fire and exited the aircraft.

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Original NASA ASRS Text

Title: Air Taxi Captain reported an unsafe gear indication when the gear was selected down for landing. The QRH procedure was complied with but only the right main and nose gear were successfully extended. A landing with the left main gear retracted was then accomplished and the crew exited the aircraft.

Narrative: Departure and en-route were all normal. Arrival and subsequent visual approach to ZZZ were also uneventful. When the gear lever was selected down; only 3 red lights illuminated. The gear panel test button illuminated all lights correctly when pressed. Another attempt to lower the gear normally also resulted in 3 red lights and no green gear lights. At this point; the landing was cancelled; we began climbing to pattern altitude; and asked tower to allow us space to orbit west of the field to troubleshoot the problem. Tower suggested left traffic at pattern altitude which we accepted. After becoming established in left traffic we consulted the QRH to determine the appropriate procedure. We then executed procedure as indicated. The FO (First Officer) performed each step and the captain verified. At the completion of the procedure 3 red lights and 2 green lights (Right Main; Nose Wheel) illuminated. We requested a low approach on YYL to get a visual confirmation by tower. Tower was unable to determine the position of the gear and suggested a low pass along [a parallel taxiway] so that they could get a better angle of view. Tower suggested a 5 mile final for [parallel taxiway] but the fuel state by this point was such that one short pass and then an immediate return for landing would be necessary. We [made] the pass on [parallel taxiway] and Tower was able to confirm that only the Right Main and Nose Wheel were down. At this point there was about 500 lbs of fuel remaining; we stated we would be landing on XXL. We made normal left traffic to XXL and touched down on the Right Main only; gently lowered the nose; deployed air brakes and held the left wing up as long as possible while maintaining centerline with rudder and braking as long as possible. When the aircraft came to a complete stop; we shut down the engines; pulled the fuel cutoff and turned all electrical systems off. We verified there was no fire and exited the aircraft.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.