DC10 crew lost left emergency AC bus.

Attributes
ACN	445492
Time
Date	199907
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : dtw.airport
State Reference	MI
Altitude	msl single value : 10000
Environment
Flight Conditions	IMC
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : d21.tracon
Operator	common carrier : air carrier
Make Model Name	DC-10 40
Operating Under FAR Part	Part 121
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : second officer
Qualification	pilot : atp pilot : flight engineer
Experience	flight time last 90 days : 100 flight time total : 10000 flight time type : 5660
ASRS Report	445492
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa other flight crewb
Resolutory Action	flight crew : diverted to another airport flight crew : landed as precaution
Supplementary
Problem Areas	Aircraft Weather
Primary Problem	Aircraft

Narrative:

Lost left emergency AC bus. Returned to airport of departure.

Original NASA ASRS Text

Title: DC10 CREW LOST L EMER AC BUS.

Narrative: LOST L EMER AC BUS. RETURNED TO ARPT OF DEP.

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.