Narrative:

Were inbound to indianapolis from champaign, when noticed smoke in cockpit. Investigation revealed smoke to be coming from around edges of windshield. Turned off windshield heat and smoke seemed to dissipate. At this point ATC reported four mi from VOR. At this point I advised ATC we had some smoke in cockpit and requested minimum vectoring. Proceeded inbound and landed at indianapolis west/O further incident.

Google
 

Original NASA ASRS Text

Title: TRACK DEVIATION. SMOKE IN COCKPIT.

Narrative: WERE INBND TO INDIANAPOLIS FROM CHAMPAIGN, WHEN NOTICED SMOKE IN COCKPIT. INVESTIGATION REVEALED SMOKE TO BE COMING FROM AROUND EDGES OF WINDSHIELD. TURNED OFF WINDSHIELD HEAT AND SMOKE SEEMED TO DISSIPATE. AT THIS POINT ATC RPTED FOUR MI FROM VOR. AT THIS POINT I ADVISED ATC WE HAD SOME SMOKE IN COCKPIT AND REQUESTED MINIMUM VECTORING. PROCEEDED INBND AND LANDED AT INDIANAPOLIS W/O FURTHER INCIDENT.

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.