PA30 pilot experienced an electrical failure and landed without incident at evb.

Attributes
ACN	690025
Time
Date	200603
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : evb.airport
State Reference	FL
Altitude	msl single value : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dab.tracon
Operator	general aviation : personal
Make Model Name	PA-30 Twin Comanche
Operating Under FAR Part	Part 91
Flight Phase	cruise : level
Route In Use	enroute airway : v3.airway
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : single pilot
Qualification	pilot : multi engine pilot : instrument pilot : flight engineer pilot : cfi pilot : atp
Experience	flight time last 90 days : 82 flight time total : 26000 flight time type : 250
ASRS Report	690025
Person 2
Affiliation	government : faa
Function	controller : approach
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	controller : provided flight assist flight crew : diverted to another airport flight crew : landed as precaution
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

While troubleshooting autoplt problem; discovered electrical system low voltage. No output from either alternator. Attempted reset; no change. Battery voltage dropping rapidly. Turned off all electrical except #2 communication radio. Notified ATC of impending radio failure and requested vector to nearest suitable airport. Evb approximately 6 NM. Controller informed us evb using runway 29 and cleared us to it. Received handoff to evb tower but lost all electrical before making contact. Made pass down runway 29 at 1000 ft and circled the airport while performing manual gear extension. Landed runway 29 and turned off runway. We were able to get a handheld radio working for taxi in to FBO. Did not want to continue into and through the busy dab airspace without radio communication. ATC was very helpful and anticipated our needs.

Original NASA ASRS Text

Title: PA30 PLT EXPERIENCED AN ELECTRICAL FAILURE AND LANDED WITHOUT INCIDENT AT EVB.

Narrative: WHILE TROUBLESHOOTING AUTOPLT PROB; DISCOVERED ELECTRICAL SYS LOW VOLTAGE. NO OUTPUT FROM EITHER ALTERNATOR. ATTEMPTED RESET; NO CHANGE. BATTERY VOLTAGE DROPPING RAPIDLY. TURNED OFF ALL ELECTRICAL EXCEPT #2 COM RADIO. NOTIFIED ATC OF IMPENDING RADIO FAILURE AND REQUESTED VECTOR TO NEAREST SUITABLE ARPT. EVB APPROX 6 NM. CTLR INFORMED US EVB USING RWY 29 AND CLRED US TO IT. RECEIVED HDOF TO EVB TWR BUT LOST ALL ELECTRICAL BEFORE MAKING CONTACT. MADE PASS DOWN RWY 29 AT 1000 FT AND CIRCLED THE ARPT WHILE PERFORMING MANUAL GEAR EXTENSION. LANDED RWY 29 AND TURNED OFF RWY. WE WERE ABLE TO GET A HANDHELD RADIO WORKING FOR TAXI IN TO FBO. DID NOT WANT TO CONTINUE INTO AND THROUGH THE BUSY DAB AIRSPACE WITHOUT RADIO COM. ATC WAS VERY HELPFUL AND ANTICIPATED OUR NEEDS.

Data retrieved from NASA's ASRS site as of January 2009 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.