Narrative:

I was the single pilot of a flight in my king air flying passengers from under VMC conditions with VFR flight following. The conditions were night; VMC with a ceiling at 4600 feet AGL and visibility 6 miles. I was handed off to approach then ZZZ tower who then cleared me to land; but asked for a 3 mile from ZZZ report. While in VMC conditions; I lowered my gear at approximately 7000 feet MSL and 5 miles and from ZZZ with the runway in sight. I did not receive all three green 'gear down' annunciators. I informed ZZZ tower that I had to go around. As I went around; I had to climb for terrain clearance. As I began to trouble shoot the problem; I entered into freezing rain. The rain formed sheets of ice on my windscreen which disabled my forward visibility and thus my ability to maintain VFR. I immediately requested an instrument clearance from tower and climbed out on radar vectors per their instructions. As I began my climb into VMC conditions; I began to develop large amounts of mixed rime and clear ice which my anti ice and deice systems could not keep up with. I had time to determine that the omission of the one landing gear annunciator; was caused by a set of burned out bulbs. I had spares on board and quickly changed them out. The three green gear annunciators worked indicating gear was indeed down at this point. I flew the ILS 12 approach into ZZZ without any further problems. My airplane was 8 days past its 24 month pitot/static and transponder check. I have subsequently had the 24 month check on these systems 4 days later. The systems checked out fine with no errors; large adjustments or repairs.

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Original NASA ASRS Text

Title: King Air pilot experiences two green lights and a blank indicator when the gear is extended for landing. A go-around is initiated and while troubleshooting freezing rain is encountered requiring an IFR clearance and vectors for an approach. The gear indicator bulbs are changed and a normal landing ensues.

Narrative: I was the single Pilot of a flight in my King Air flying passengers from under VMC conditions with VFR flight following. The conditions were night; VMC with a ceiling at 4600 feet AGL and visibility 6 miles. I was handed off to approach then ZZZ tower who then cleared me to land; but asked for a 3 mile from ZZZ report. While in VMC conditions; I lowered my gear at approximately 7000 feet MSL and 5 miles and from ZZZ with the runway in sight. I did not receive all three green 'gear down' annunciators. I informed ZZZ tower that I had to go around. As I went around; I had to climb for terrain clearance. As I began to trouble shoot the problem; I entered into freezing rain. The rain formed sheets of ice on my windscreen which disabled my forward visibility and thus my ability to maintain VFR. I immediately requested an instrument clearance from tower and climbed out on radar vectors per their instructions. As I began my climb into VMC conditions; I began to develop large amounts of mixed rime and clear ice which my anti ice and deice systems could not keep up with. I had time to determine that the omission of the one landing gear annunciator; was caused by a set of burned out bulbs. I had spares on board and quickly changed them out. The three green gear annunciators worked indicating gear was indeed down at this point. I flew the ILS 12 approach into ZZZ without any further problems. My airplane was 8 days past its 24 month pitot/static and transponder check. I have subsequently had the 24 month check on these systems 4 days later. The systems checked out fine with no errors; large adjustments or repairs.

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.