Narrative:

At approximately 1;500 AGL the pilot flying (the PIC) requested the landing gear be placed in the down position. The non-flying pilot (the sic) complied with the request. At this time the crew noticed that the left main landing gear indication showed the left main landing gear was not down and locked. (The indication was as follows: nose and right main gear were illuminated green; left main gear was not illuminated; and the red gear unsafe light was extinguished). At this point a missed approach was initiated by the flying pilot. The gear was left in the down position. The tower controller then instructed the crew to maintain runway heading; climb and maintain 2;000. The tower controller then stated that from the tower cab 'all three landing gear looked down.' the departure controller then instructed the crew to climb and maintain 4;000. The crew complied and when the aircraft was configured at 4;000 the abnormal 'landing gear will not extend' check list was called for. The abnormal checklist was then run to its completion by the sic. The indication did not change. At this time the PIC selected 'landing gear' on the rotary test knob. The landing gear indication did not change. At this time the crew discussed the situation and decided that taking into account all indications; the left main gear down and locked light bulb was burned out. The crew decided that approach would be made at this time. The PIC then declared an emergency with the approach controller and requested the longest runway available and to have the arff crew standing by upon landing. The crew briefed to conduct the approach as normal and to touch down 'as softly as possible' and to 'hold off' the left main gear as long as possible. The sic than assumed air traffic control communication and informed the tower controller that after clearing the runway we would require a tow to parking. The landing was normal and the crew cleared the runway without incident. At this time the crew conducted the after landing and shut down check list. The passengers were than escorted to a waiting airport operations vehicle and the aircraft was secured for towing.

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Original NASA ASRS Text

Title: CE560 flight crew failed to observe a down indication on the left main gear after extending the gear during approach. After executing a go-around it is determined that an indicator light has failed and a normal landing ensued.

Narrative: At approximately 1;500 AGL the pilot flying (the PIC) requested the landing gear be placed in the down position. The non-flying pilot (the SIC) complied with the request. At this time the crew noticed that the left main landing gear indication showed the left main landing gear was not down and locked. (The indication was as follows: nose and right main gear were illuminated green; left main gear was not illuminated; and the red gear unsafe light was extinguished). At this point a missed approach was initiated by the flying pilot. The gear was left in the down position. The Tower Controller then instructed the crew to maintain runway heading; climb and maintain 2;000. The Tower Controller then stated that from the tower cab 'all three landing gear looked down.' The departure controller then instructed the crew to climb and maintain 4;000. The crew complied and when the aircraft was configured at 4;000 the abnormal 'Landing Gear Will Not Extend' check list was called for. The abnormal checklist was then run to its completion by the SIC. The indication did not change. At this time the PIC selected 'Landing Gear' on the rotary test knob. The landing gear indication did not change. At this time the crew discussed the situation and decided that taking into account all indications; the left main gear down and locked light bulb was burned out. The crew decided that approach would be made at this time. The PIC then declared an emergency with the Approach Controller and requested the longest runway available and to have the ARFF crew standing by upon landing. The crew briefed to conduct the approach as normal and to touch down 'as softly as possible' and to 'hold off' the left main gear as long as possible. The SIC than assumed air traffic control communication and informed the Tower Controller that after clearing the runway we would require a tow to parking. The landing was normal and the crew cleared the runway without incident. At this time the crew conducted the after landing and shut down check list. The passengers were than escorted to a waiting airport operations vehicle and the aircraft was secured for towing.

Data retrieved from NASA's ASRS site as of April 2012 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.