Pilot of an small transport twin lost electrical power shortly after departure on an IFR flight plan resulting in diverting to land in VFR conditions. Problem was determined to be the right engine alternator fuse disconnect which caused the left to disconnect due to an overload with air-conditioning on.

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Attributes
ACN	377483
Time
Date	199708
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : jvy airport : sdf
State Reference	KY
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : sdf
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	other : unknown
Flight Phase	cruise other other other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : single pilot
Qualification	other other : other pilot : cfi pilot : commercial pilot : instrument
Experience	flight time last 90 days : 150 flight time total : 12000 flight time type : 500
ASRS Report	377483
Person 2
Affiliation	government : faa
Function	controller : departure
Qualification	controller : radar
Events
Anomaly	aircraft equipment problem : critical other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	Other
Supplementary
Primary Problem	Aircraft

Narrative:

Alternator field fuse vibrated out on right alternator. Air- conditioner caused left alternator to go off line, but could not carry air-conditioner load. Lost radio and navigation. VFR. Diverted to jeffersonville, in, and landed. Called ATC and explained, no problem. Replaced fuse. Everything worked. Aircraft airworthy and continued to fly.

Original NASA ASRS Text

Title: PLT OF AN SMT TWIN LOST ELECTRICAL PWR SHORTLY AFTER DEP ON AN IFR FLT PLAN RESULTING IN DIVERTING TO LAND IN VFR CONDITIONS. PROB WAS DETERMINED TO BE THE R ENG ALTERNATOR FUSE DISCONNECT WHICH CAUSED THE L TO DISCONNECT DUE TO AN OVERLOAD WITH AIR-CONDITIONING ON.

Narrative: ALTERNATOR FIELD FUSE VIBRATED OUT ON R ALTERNATOR. AIR- CONDITIONER CAUSED L ALTERNATOR TO GO OFF LINE, BUT COULD NOT CARRY AIR-CONDITIONER LOAD. LOST RADIO AND NAV. VFR. DIVERTED TO JEFFERSONVILLE, IN, AND LANDED. CALLED ATC AND EXPLAINED, NO PROB. REPLACED FUSE. EVERYTHING WORKED. ACFT AIRWORTHY AND CONTINUED TO FLY.

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.