Narrative:

I was pilot flying for our first leg of the day; with 3 passengers and 3 dogs. Departure; cruise; and decent phases of the flight were uneventful and a visual approach was planned due to VFR conditions at the field. The landing gear was extended during our decent into the airport traffic area and an indication of 'two green; one red' was noted. The right main landing gear light was not illuminated and the red 'gear unlocked' light was illuminated. We then flew east of the airport to circle and run the 'gear will not extend' checklist. I transferred the controls to the first officer and ran the checklist. At the completion of the check list the problem was still unresolved. We elected to divert. While the first officer flew the aircraft and coordinated with ATC; I informed the passengers of our situation and our intentions; and made a telephone call to the operations hotline. The flight phone was out of range so a call was made with a cell phone; resulting in several dropped calls. I informed the assistant chief pilot of our status and had a conference with maintenance on possible resolutions. Two low passes were flown by the tower for a visual of our landing gear. They reported to us that all three landing gear appeared to be down. We then left the pattern to circle west of the field so we could relay the towers observations to maintenance. After conferring with the assistant chief pilot and maintenance; a decision to land was made. While the first officer continued to fly; I went back to the cabin to brief the passengers and insure everything was safely stowed. After returning to the cockpit; we reviewed the airport diagram and briefed a visual approach. The decision was made to evacuate on the runway and our intentions were relayed to tower. We were told that the trucks would be standing by. I assumed aircraft control again and began a right downwind. On base leg the flaps were extended to 35 and the right main gear indicator light illuminated and the red 'gear unlocked' light extinguished. A decision was made to proceed as previously briefed including the evacuation on the runway. The landing was uneventful and all passengers deplaned safely. The passengers were taken to the FBO by van. After the aircraft was secure we delivered that passengers luggage and saw them off.

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Original NASA ASRS Text

Title: CE560 Captain experienced unsafe right main gear indication during approach and all attempts to remedy the situation are unsuccessful. The crew elected to divert to an airport with a longer runway where a tower flyby indicated all three gear were down. During visual approach when flaps are extended to 35; the unsafe indication was replaced by three green lights.

Narrative: I was pilot flying for our first leg of the day; with 3 passengers and 3 dogs. Departure; cruise; and decent phases of the flight were uneventful and a visual approach was planned due to VFR conditions at the field. The landing gear was extended during our decent into the airport traffic area and an indication of 'two green; one red' was noted. The right main landing gear light was not illuminated and the red 'gear unlocked' light was illuminated. We then flew east of the airport to circle and run the 'gear will not extend' checklist. I transferred the controls to the First Officer and ran the checklist. At the completion of the check list the problem was still unresolved. We elected to divert. While the First Officer flew the aircraft and coordinated with ATC; I informed the passengers of our situation and our intentions; and made a telephone call to the Operations hotline. The flight phone was out of range so a call was made with a cell phone; resulting in several dropped calls. I Informed the Assistant Chief Pilot of our status and had a conference with Maintenance on possible resolutions. Two low passes were flown by the Tower for a visual of our landing gear. They reported to us that all three landing gear appeared to be down. We then left the pattern to circle west of the field so we could relay the Towers observations to Maintenance. After conferring with the Assistant Chief Pilot and Maintenance; a decision to land was made. While the First Officer continued to fly; I went back to the cabin to brief the passengers and insure everything was safely stowed. After returning to the cockpit; we reviewed the airport diagram and briefed a visual approach. The decision was made to evacuate on the runway and our intentions were relayed to Tower. We were told that the trucks would be standing by. I assumed aircraft control again and began a right downwind. On base leg the flaps were extended to 35 and the right main gear indicator light illuminated and the red 'gear unlocked' light extinguished. A decision was made to proceed as previously briefed including the evacuation on the runway. The landing was uneventful and all passengers deplaned safely. The passengers were taken to the FBO by van. After the aircraft was secure we delivered that passengers luggage and saw them off.

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.