Narrative:

30 mi west of ZZZ; cockpit lights brightened; then smoke filled cockpit and cockpit lights went out. I ran through the emergency smoke in cockpit checklist; then contacted ATC and declared emergency. We landed at ZZZ without further incident.

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Original NASA ASRS Text

Title: BE90 DECLARES EMERGENCY AND LANDS AFTER EXPERIENCING SMOKE FILLED COCKPIT DUE TO MALFUNCTIONING COCKPIT LIGHTING.

Narrative: 30 MI W OF ZZZ; COCKPIT LIGHTS BRIGHTENED; THEN SMOKE FILLED COCKPIT AND COCKPIT LIGHTS WENT OUT. I RAN THROUGH THE EMER SMOKE IN COCKPIT CHKLIST; THEN CONTACTED ATC AND DECLARED EMER. WE LANDED AT ZZZ WITHOUT FURTHER INCIDENT.

Data retrieved from NASA's ASRS site as of May 2009 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.