Primary electrical supply problem mandates that a fk-100 return land.

Attributes
ACN	307206
Time
Date	199506
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	atc facility : clt
State Reference	NC
Altitude	msl bound lower : 18000 msl bound upper : 18000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : ztl
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : flight engineer pilot : atp pilot : cfi
Experience	flight time last 90 days : 160 flight time total : 11000 flight time type : 2200
ASRS Report	307206
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
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:

Aircraft dispatched with 1 generator on MEL, leaving 1 engine generator and an APU generator. MEL specifies that the APU generator must be used. During climb out, the APU generator faulted and would not re-set, leaving the electrical supplied by 1 generator with battery backup. I judged this to be an emergency situation due to possible failure of the remaining generator, leaving questionable battery power to remain in radio contact with the ground. We declared an emergency and returned to charlotte, nc, and landed without incident. The APU generator was written up.

Original NASA ASRS Text

Title: PRIMARY ELECTRICAL SUPPLY PROB MANDATES THAT A FK-100 RETURN LAND.

Narrative: ACFT DISPATCHED WITH 1 GENERATOR ON MEL, LEAVING 1 ENG GENERATOR AND AN APU GENERATOR. MEL SPECIFIES THAT THE APU GENERATOR MUST BE USED. DURING CLBOUT, THE APU GENERATOR FAULTED AND WOULD NOT RE-SET, LEAVING THE ELECTRICAL SUPPLIED BY 1 GENERATOR WITH BATTERY BACKUP. I JUDGED THIS TO BE AN EMER SIT DUE TO POSSIBLE FAILURE OF THE REMAINING GENERATOR, LEAVING QUESTIONABLE BATTERY PWR TO REMAIN IN RADIO CONTACT WITH THE GND. WE DECLARED AN EMER AND RETURNED TO CHARLOTTE, NC, AND LANDED WITHOUT INCIDENT. THE APU GENERATOR WAS WRITTEN UP.

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.