Narrative:

In cruise, autoplt on, air driven generator deployed, lost #1 generator. Smoke 30 seconds to 1 min later from floor area. An emergency declared, donned oxygen and goggles. Diverted to rdu. Communication with flight attendant in back. No problems in cabin reported, normal landing.

Google
 

Original NASA ASRS Text

Title: A CL65 FLT CREW EXPERIENCES SMOKE IN THE COCKPIT RESULTING IN AN EMER LNDG.

Narrative: IN CRUISE, AUTOPLT ON, AIR DRIVEN GENERATOR DEPLOYED, LOST #1 GENERATOR. SMOKE 30 SECONDS TO 1 MIN LATER FROM FLOOR AREA. AN EMER DECLARED, DONNED OXYGEN AND GOGGLES. DIVERTED TO RDU. COM WITH FLT ATTENDANT IN BACK. NO PROBS IN CABIN RPTED, NORMAL LNDG.

Data retrieved from NASA's ASRS site as of July 2007 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.