Air carrier large transport enroute lax to bos diverts to ord due fumes in cockpit.

Attributes
ACN	135310
Time
Date	199001
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : kord
State Reference	IL
Altitude	msl bound lower : 41000 msl bound upper : 41000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zau tower : sju
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : commercial pilot : flight engineer pilot : private pilot : instrument
Experience	flight time last 90 days : 200 flight time total : 17000 flight time type : 2000
ASRS Report	135310
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 400 flight time total : 7700 flight time type : 1500
ASRS Report	135108
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

En route lax to bos detected fumes in airplane believed to be electrical in nature. Diverted to ord for landing. Fumes disappeared during descent but returned while taxiing after landing. Ground evacuation followed.

Original NASA ASRS Text

Title: ACR LGT ENROUTE LAX TO BOS DIVERTS TO ORD DUE FUMES IN COCKPIT.

Narrative: ENRTE LAX TO BOS DETECTED FUMES IN AIRPLANE BELIEVED TO BE ELECTRICAL IN NATURE. DIVERTED TO ORD FOR LNDG. FUMES DISAPPEARED DURING DSCNT BUT RETURNED WHILE TAXIING AFTER LNDG. GND EVACUATION FOLLOWED.

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.