A dassault falcon 20 at 13000 ft experienced smoke in the cockpit and diverted.

Attributes
ACN	361824
Time
Date	199702
Day	Fri
Local Time Of Day	0001 To 0600
Place
Locale Reference	atc facility : dtw
State Reference	MI
Altitude	msl bound lower : 13000 msl bound upper : 13000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	other
Make Model Name	Falcon 20FJF/20C/20D/20E/20F
Operating Under FAR Part	Part 135
Flight Phase	climbout : intermediate altitude other other
Route In Use	departure other enroute airway : dtw
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : cfi pilot : flight engineer
Experience	flight time last 90 days : 205 flight time total : 9010 flight time type : 110
ASRS Report	361824
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa other other : unspecified cockpit
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

We were on a flight to pick up cargo in a da-20. At 13000 ft we first noticed smoke in the cockpit. We returned to ptk after informing approach of the problem. The procedure to clear the smoke worked, and we were met by the fire trucks on landing. Callback conversation with reporter revealed the following information: aircraft was a dassault falcon 20. The cause of the smoke was the previous crew had left the air conditioning temperature selector in full hot. This caused an air conditioning duct overheat condition. Flight crew overlooked this selector switch on preflight check. The reporter was not contacted by the FAA.

Original NASA ASRS Text

Title: A DASSAULT FALCON 20 AT 13000 FT EXPERIENCED SMOKE IN THE COCKPIT AND DIVERTED.

Narrative: WE WERE ON A FLT TO PICK UP CARGO IN A DA-20. AT 13000 FT WE FIRST NOTICED SMOKE IN THE COCKPIT. WE RETURNED TO PTK AFTER INFORMING APCH OF THE PROB. THE PROC TO CLR THE SMOKE WORKED, AND WE WERE MET BY THE FIRE TRUCKS ON LNDG. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: ACFT WAS A DASSAULT FALCON 20. THE CAUSE OF THE SMOKE WAS THE PREVIOUS CREW HAD LEFT THE AIR CONDITIONING TEMP SELECTOR IN FULL HOT. THIS CAUSED AN AIR CONDITIONING DUCT OVERHEAT CONDITION. FLC OVERLOOKED THIS SELECTOR SWITCH ON PREFLT CHK. THE RPTR WAS NOT CONTACTED BY THE FAA.

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.