Narrative:

After I took off and put the gear up; the landing gear cube lights and hydraulic pressure light was out. I canceled IFR after having the field visually and started down. I leveled out at 1;100 feet and entered left traffic for [the runway]. I was cleared to land and I went to put the gear down. I noticed that the left main gear cube light was illuminated with the gear handle up and hydraulic pressure light out. I asked the tower for an extended downwind and advised them of my abnormality. I consulted the QRH and put the gear down by blowing it with the nitro bottle. I heard a thump after pulling the t-handle and had the tower verify that they could see three gears. I tested the gear horn and was satisfied that the gear was down and a safe landing could be made. I made a successful landing and called maintenance and operations center with the problem. No emergency was declared; and the passengers did not have any delay.

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Original NASA ASRS Text

Title: The pilot of a C402 observed an unexpected landing gear indication prior to the lowering of the gear. He consulted the flight manual; performed and alternate gear extension; and a successful landing.

Narrative: After I took off and put the gear up; the landing gear cube lights and HYD pressure light was out. I canceled IFR after having the field visually and started down. I leveled out at 1;100 feet and entered left traffic for [the runway]. I was cleared to land and I went to put the gear down. I noticed that the left main gear cube light was illuminated with the gear handle up and HYD pressure light out. I asked the Tower for an extended downwind and advised them of my abnormality. I consulted the QRH and put the gear down by blowing it with the nitro bottle. I heard a thump after pulling the T-Handle and had the Tower verify that they could see three gears. I tested the gear horn and was satisfied that the gear was down and a safe landing could be made. I made a successful landing and called Maintenance and Operations Center with the problem. No emergency was declared; and the passengers did not have any delay.

Data retrieved from NASA's ASRS site as of July 2013 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.