A320 has smoke in cabin.

Attributes
ACN	451379
Time
Date	199909
Day	Wed
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dtw.airport
State Reference	MI
Altitude	msl single value : 12000
Environment
Flight Conditions	IMC
Weather Elements	Rain
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : d21.tracon
Operator	common carrier : air carrier
Make Model Name	A320
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	descent : intermediate altitude
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : multi engine
Experience	flight time last 90 days : 200 flight time total : 9000 flight time type : 600
ASRS Report	451379
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : multi engine
Events
Anomaly	aircraft equipment problem : critical other anomaly other anomaly
Resolutory Action	controller : issued new clearance flight crew : declared emergency flight crew : landed in emergency condition
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

On descent into dtw, approximately 12000 ft, 250 KTS, 40 mi northwest of dtw, flight attendant came to cockpit and informed 'smoke in cabin' with sense of urgency. Captain instructed first officer to go back to cabin and check it out. First officer observed smoke/vapor throughout cabin from top to bottom, visibility somewhat obscured, and some unidentifiable odor. First officer returned to cockpit, informed captain of findings. Aircraft was proceeding/expediting direct xyz, 38 mi out, 11000 ft. First officer asked for lower, ATC idented flight XXX as emergency and asked souls/fuel onboard. Flight attendant informed cockpit vapor/smoke remained and thought 'electrical' smell. Did checklist per smoke/fume. Cabin fans turned off, smoke later dissipated. Vector 12 mi final. Emergency equipment met aircraft. Uneventful landing. Source of vapor/smoke unknown.

Original NASA ASRS Text

Title: A320 HAS SMOKE IN CABIN.

Narrative: ON DSCNT INTO DTW, APPROX 12000 FT, 250 KTS, 40 MI NW OF DTW, FLT ATTENDANT CAME TO COCKPIT AND INFORMED 'SMOKE IN CABIN' WITH SENSE OF URGENCY. CAPT INSTRUCTED FO TO GO BACK TO CABIN AND CHK IT OUT. FO OBSERVED SMOKE/VAPOR THROUGHOUT CABIN FROM TOP TO BOTTOM, VISIBILITY SOMEWHAT OBSCURED, AND SOME UNIDENTIFIABLE ODOR. FO RETURNED TO COCKPIT, INFORMED CAPT OF FINDINGS. ACFT WAS PROCEEDING/EXPEDITING DIRECT XYZ, 38 MI OUT, 11000 FT. FO ASKED FOR LOWER, ATC IDENTED FLT XXX AS EMER AND ASKED SOULS/FUEL ONBOARD. FLT ATTENDANT INFORMED COCKPIT VAPOR/SMOKE REMAINED AND THOUGHT 'ELECTRICAL' SMELL. DID CHKLIST PER SMOKE/FUME. CABIN FANS TURNED OFF, SMOKE LATER DISSIPATED. VECTOR 12 MI FINAL. EMER EQUIP MET ACFT. UNEVENTFUL LNDG. SOURCE OF VAPOR/SMOKE UNKNOWN.

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.